TOTO G5A vs StudioLux SLi 3000

Thinking about upgrading to a smart toilet but not sure which model fits your bathroom?

This side-by-side review of the TOTO Washlet G5A and the StudioLux SLi 3000 breaks down everything you need to know before you buy.

What Is an Integrated Bidet Toilet?

If you've been researching luxury bathroom upgrades, you've probably come across the term integrated bidet toilet or smart bidet toilet.

Unlike a bidet seat that mounts onto a separate toilet, a one-piece intelligent toilet combines the bowl, tank (or tankless system), and bidet seat into a single seamless unit. The result is a cleaner visual profile, fewer seams where grime can collect, and a more refined presence in the bathroom overall.

At this price point, buyers are rarely choosing between a smart toilet and a standard toilet. The more common question is which integrated bidet toilet best fits their space, their habits, and the level of technology they actually want to use every day.

The two models we're comparing here, the TOTO Washlet G5A (MS7631CEMFG#01) and the StudioLux SLi 3000, sit in adjacent price tiers and share a lot of DNA on paper. But once you get into the details, they are built around meaningfully different philosophies.

Read on and we'll walk you through every relevant difference.

TOTO Washlet G5A

TOTO is a Japanese company with over a century of bathroom engineering behind it, and the brand is widely considered the gold standard in smart bidet toilets in the United States.

The Washlet G5A is TOTO's current entry-level integrated bidet toilet, replacing the discontinued G450. It brings several upgrades over its predecessor including eWater+ nozzle sanitization, a refined skirted design, and a multifunction remote with four personalized user presets.

For buyers who want a fully hands-free bathroom ecosystem backed by proprietary technology and a globally recognized brand, the TOTO G5A is typically the starting point of the conversation.

StudioLux SLi 3000

StudioLux is a newer player in the luxury bathroom space, and the SLi 3000 is their entry-level one-piece intelligent toilet.

It delivers the core smart toilet experience, including instant warm water, auto flush, a heated seat, warm air dryer, and wireless remote control, at a noticeably lower price than comparable TOTO models.

For buyers doing a full bathroom renovation who want a premium look and a complete bidet feature set without committing to the TOTO price tag, the SLi 3000 is a compelling option worth taking seriously.

StudioLux SLi 3000 vs TOTO G5A - Key Differences

After comparing both of these integrated bidet toilets side by side, the main differences we identified are:

1. Flushing and Bowl Technology
2. Bidet and Hygiene Features
3. Automation and Smart Features
4. Design and Footprint
5. Warranty

We'll dive into more detail on each of these categories below.

Flushing and Bowl Technology

This is where the two toilets diverge most significantly from an engineering standpoint.

The TOTO G5A uses TOTO's proprietary Tornado Flush system. Two powerful nozzles generate a centrifugal, 360-degree cyclonic rinsing action that reaches every surface of the bowl, including the hole-free rimless design that eliminates the hidden ledges where bacteria typically accumulate.

The full flush uses 1.2 GPF and the light flush uses 1.0 GPF.

The StudioLux SLi 3000 uses a Siphon Jet Rimless Dual Flush system at 1.28 GPF and 1.0 GPF. It's also a rimless design, which gives it a hygienic edge over traditional toilets, but the flush mechanism is more conventional than TOTO's cyclonic approach.

Bowl surface technology is another differentiator.

The TOTO G5A is coated with CeFiONtect ion-barrier glaze, an ultra-smooth ceramic finish engineered to prevent waste from adhering to the bowl surface. It also includes Premist, a feature that automatically wets the bowl with a fine mist before each use to make waste easier to remove.

The SLi 3000 uses Micro Shield Antibacterial Glaze, which inhibits bacterial growth on the surface, but does not include an equivalent pre-misting function.

For buyers who place a premium on long-term bowl cleanliness with minimal manual scrubbing, the TOTO system is more comprehensive.

Bidet and Hygiene Features

Both toilets offer rear and front wash modes with oscillating and pulsating spray, adjustable water temperature, adjustable water pressure, and instant warm water. For everyday use, the wash experience on both units is genuinely comparable.

The meaningful difference here is nozzle hygiene between uses.

The TOTO G5A uses eWater+, which sprays electrolyzed water onto the wand before and after every use. This is a passive, fully automated sanitization process that requires no user intervention.

The StudioLux SLi 3000 takes a different approach: it includes a removable stainless steel wand that can be physically taken out and cleaned. Both approaches address nozzle hygiene, but eWater+ does it without any effort on the user's part.

On spray settings specifically, the G5A offers five distinct options via the multifunction remote. The SLi 3000 provides oscillating and massage modes, which covers the fundamentals well but with less granularity.

Automation and Smart Features

This is the clearest category advantage for the TOTO G5A.

The G5A includes an auto open and close lid triggered by a proximity sensor. When you walk toward the toilet, the lid opens automatically. When you walk away, it closes. Combined with auto-flush, this creates a fully hands-free experience from approach to exit.

The StudioLux SLi 3000 includes auto-flush but does not have an auto-open or close lid. For buyers who are drawn to smart toilets specifically for the hands-free experience, that is a notable gap.

Design and Footprint

The two toilets have noticeably different physical profiles, which matters both for installation planning and for how they look in a finished bathroom.

The TOTO G5A is taller and narrower: 22 and 3/8 inches high by 15 and 1/4 inches wide.

The StudioLux SLi 3000 is shorter and wider: 18 and 7/8 inches high by 16 and 3/4 inches wide.

The TOTO sits with a more upright, slender presence. The SLi 3000 has a lower, broader profile that some buyers will find more contemporary and grounded.

From a weight standpoint, the SLi 3000 is slightly heavier at 110 pounds compared to the G5A's 99 pounds total. Both require a 12-inch rough-in and a GFCI outlet within reach. Both are ADA-height compliant.

If your bathroom has specific clearance constraints or a design direction that favors a lower profile, the SLi 3000's dimensions may actually be the better fit.

Warranty

This is the one category where the StudioLux SLi 3000 has a clear, objective advantage.

The StudioLux SLi 3000 includes a 3-year residential warranty. The TOTO Washlet G5A includes a 1-year limited warranty for both residential and commercial use.

For a product in the $3,000 range, TOTO's warranty coverage is notably shorter than what you might expect given the brand's reputation.

What You Get With Either Toilet

Before focusing only on differences, it's worth being clear about what both of these smart bidet toilets deliver regardless of which one you choose.

Both the TOTO G5A and the StudioLux SLi 3000 share the following:

• auto flush
• instant unlimited warm water
• adjustable heated seat
• warm air dryer
• deodorizer
• night light
• wireless remote control
• 12-inch rough-in
• elongated bowl
• ADA-height compliant 

For a buyer upgrading from a traditional toilet or a basic bidet seat, either product represents a significant and immediately noticeable improvement to their daily bathroom experience.

The differences discussed above matter, but the shared feature set is substantial.

Which One Is Right for You?

Choose the TOTO Washlet G5A if you want the most complete hands-free bathroom ecosystem available at this price point.

The combination of eWater+, Premist, Tornado Flush, CeFiONtect, auto open/close lid, and four-user memory presets represents a genuinely integrated technology platform, not just a list of individual features.

TOTO has spent decades refining how these systems work together, and it shows in daily use. If you're doing a primary bathroom renovation and want the toilet to feel as premium as the rest of the room for years to come, the TOTO G5A is the right call.

If the Washlet G5A appeals to you but the price is a consideration, TOTO also makes the G5A Lite MS7421CEMFG#01 at a meaningfully lower price point.

The TOTO G5A Lite shares every core feature with the standard G5A including:

• Tornado Flush
• eWater+
• CeFiONtect
• auto open/close lid
• four-user presets

In fact, the G5A Lite only gives up two things:

1. built-in night light
2. silver accent strip on the body

For most buyers, it's the smarter purchase within the TOTO lineup. For more on the differences, read our full TOTO G5A vs G5A Lite comparison.

Choose the StudioLux SLi 3000 if you want a fully featured smart bidet toilet with a modern design aesthetic, a lower profile that suits contemporary bathroom trends, a 3-year warranty, and a meaningfully lower price.

If you're outfitting a guest bathroom, a secondary master bath, or simply don't need every automation feature TOTO offers, the SLi 3000 delivers the core smart toilet experience without the flagship price tag.

The removable stainless steel wand is also a practical nozzle hygiene solution that some buyers will prefer over an automated system.

Final Thoughts

Both the TOTO Washlet G5A and the StudioLux SLi 3000 are serious, well-built integrated bidet toilets that will meaningfully upgrade any bathroom.

The decision between them comes down to how important full automation, TOTO's proprietary technology ecosystem, and brand heritage are relative to price, warranty length, and design profile.

If you're still weighing your options, our Bidet Finder Quiz is a good place to start.

You can also browse our full collection of integrated bidet toilets or reach out directly at 707-297-3991 and our friendly bidet experts will help you find the right fit for your bathroom and budget.

Related reading:

• TOTO G5A vs Neorest: Is There a Difference?
• TOTO G5A vs G450: Everything You Need to Know
• TOTO Neorest Comparison Chart