Head-to-head · Best Water Flossers

Waterpik Aquarius WP-660 vs Waterpik Cordless Advanced 2.0

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Waterpik Aquarius WP-660 comes out ahead by a narrow margin (4.8 vs 4.6). The gap is mostly about users committed to daily flossing with multiple oral conditions — read the strengths below before deciding.

Higher ratedRanked #1 in Best Water Flossers

Waterpik Aquarius WP-660

4.8

$80

The Aquarius WP-660 is the best-overall pick — Waterpik's countertop flagship with most settings and tip options.

Strengths

— 10 pressure settings — most adjustability in this lineup
— 7 tip variations (orthodontic, plaque, periodontal, etc.)
— Massage mode for gum stimulation

Watch-outs

— Countertop only — no portability
— 2-minute reservoir runtime
— Splatter learning curve

$80 · Check Price on Amazon Full review →

Ranked #3 in Best Water Flossers

Waterpik Cordless Advanced 2.0

4.6

$99

The Cordless Advanced 2.0 is the long-battery pick — Waterpik's cordless that beats the Sonicare 3000 on runtime.

Strengths

— Month-long battery on a single charge
— Three pressure modes
— Ergonomic narrow-neck handle

Watch-outs

— Smaller reservoir than countertop
— Tip storage on board is limited
— Premium price for cordless

$99 · Check Price on Amazon Full review →

How they stack up

Waterpik Aquarius WP-660

Most settings and tips. Countertop. Best clinical reputation.

Waterpik Cordless Advanced 2.0

Best cordless battery. Waterpik brand. Smaller reservoir.

Specs side-by-side

Spec	Waterpik Aquarius WP-660	Waterpik Cordless Advanced 2.0
Type	Countertop	Cordless
Pressure	10 settings	3 modes
Tips	7	—
Brand	Waterpik	—
Battery	—	1 month
Waterproof	—	Yes

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