Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.
Waterdrop G3P800 Tankless comes out ahead by a narrow margin (4.6 vs 4.7). The gap is mostly about users with limited under-sink space who want on-demand RO — read the strengths below before deciding.
The ROES-50 is the budget RO pick — APEC's 5-stage system with the lowest annual filter cost.
The G3P800 is the tankless RO pick — Waterdrop's on-demand RO with smart faucet at premium price.
Cheapest filter cost. USA-made. No alkaline.
Tankless. Highest GPD. Premium price.
| Spec | APEC ROES-50 | Waterdrop G3P800 Tankless |
|---|---|---|
| Stages | 5 | 7 tankless |
| Origin | USA | — |
| Filter Cost | ~$75/yr | — |
| Warranty | 2-year | — |
| GPD | — | 800 |
| Faucet | — | Smart with TDS |
| Power | — | Electrical required |