The answer — one pick, priced
Get the
AquaTru Carafe
no cap — the compact pick
Same AquaTru RO and certifications in a compact glass carafe — it tops Water Filter Guru's chart at 9.57, and nothing but glass touches your finished water.
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Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
Every glass costs more. Filters run ~$0.19 per gallon against ~$0.11 for the AquaTru Classic and ~$0.10 for the Aigerri — the carafe's smaller cartridges empty faster. Its Amazon listing was also "Currently unavailable" at verification; AquaTru sells mostly direct.
Dealbreaker? Runner-up №1 is the same RO with a bigger tank at ~$0.11/gal ↓
■ Every product has a catch. Verdicts that hide it are how bad buys happen.
Runners-up — if your needs differ
Adjacent verdicts — same method
Traps — this verdict avoids
Certification theater
"NSF/ANSI 372 certified" means the plastics are safe — it says nothing about contaminant removal. Only AquaTru (42/53/58/401/P473) and RKIN (P473) carry genuine third-party performance certs; everyone else is merely "tested to" NSF standards.
The brine bill
Pure-to-wastewater ratios run from 5:1 down to 1:1. A 1:1 unit (RKIN U1, some Bluevua configs) dumps a gallon of brine for every gallon you drink — roughly double the source water of a 4:1 AquaTru or 5:1 Aigerri.
Filters outrun the sticker
Replacement cartridges are proprietary and cost $0.08–$0.27 per gallon, or $60–$150 a year. Over three years that gap routinely exceeds the upfront price difference between two units — the cheap one often ends up costing more.
Provenance — 6 sources, dated
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