Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.
TOTO Washlet S5 comes out ahead by a narrow margin (4.8 vs 4.6). The gap is mostly about households committed to a full bidet upgrade with multiple users — read the strengths below before deciding.
The Washlet S5 is the best-overall pick — TOTO's flagship with tankless warm water and 4 user presets.
The Spa 3.0 is the warm-water non-electric pick — Tushy's Spa version connects to a sink hot line for warmth without electrical install.
Best overall. Most premium. Tankless heat unique here.
Warm water without electricity. Requires sink hot line. Cheaper than electric warm-water picks.
| Spec | TOTO Washlet S5 | Tushy Spa 3.0 |
|---|---|---|
| Type | Replacement seat | Under-seat attachment |
| Warm Water | Tankless instant | Sink hot line |
| Presets | 4 user | — |
| Heat + Dry | Yes | — |
| Power | — | None |
| Install | — | 40 minutes |