Head-to-head · Best Water Flossers

Waterpik Aquarius vs Waterpik Cordless Express

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

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The short answer

Waterpik Aquarius comes out ahead by a clear margin (4.7 vs 3.5). Waterpik Aquarius is best for: people with a power outlet near the sink who want a countertop flosser with fine pressure control. Read the strengths below before deciding.

Higher ratedRanked #2 in Best Water Flossers

Waterpik Aquarius

4.7

1 source$94.4as of Oct 12

The Waterpik Aquarius (WP-660) is a mains-powered countertop water flosser with a 22-ounce reservoir, ten pressure settings from 10 to 100 PSI, a floss and a massage mode, and a 30-second pacer. Electric Teeth names it the best countertop water flosser available and praises its plaque removal, grippy pressure dial and rotating nozzle. Its reservations are the price, the seven included tips being more than most people will use, and noise of up to 72 decibels that it calls average rather than 'ultra quiet'.

Strengths

— Ten pressure settings from 10 to 100 PSI on a textured dial that Electric Teeth found easy to adjust
— 22-ounce (651ml) removable reservoir gave Electric Teeth about 90 seconds at the highest setting and 4 minutes 45 seconds at the lowest
— Pacer pauses the water at 30 and 60 seconds, and can be switched off

Watch-outs

— Electric Teeth lists the price as a con, describing it as a premium option at a $99.99 retail price
— Needs a power outlet: there is no battery, and the cord is about 4.5 feet long
— Up to 72 decibels in use, which Electric Teeth considers average rather than the 'ultra quiet' Waterpik claims

$94.4 · Check Price on Amazon Full review →

Ranked #7 in Best Water Flossers

Waterpik Cordless Express

3.5

1 sourceall derived$34.55as of Oct 12

The Waterpik Cordless Express delivers effective interdental cleaning using AA battery power, offering both low and high pressure settings for user preference. While it provides a cordless, travel-friendly option for daily flossing, it lacks a travel pouch and built-in timing features. Users appreciate its ability to remove debris effectively, though technique and messiness are noted as factors requiring adjustment. It's best suited for those seeking a portable water flosser without the need for a charging cable or additional accessories.

Strengths

— Effective cleaning of interdental spaces with visible debris removal
— Simple slider switch to toggle between 45 psi and 75 psi pressure settings
— Travel-friendly design despite being larger than expected

Watch-outs

— Lacks a built-in timer or pacer for consistent cleaning technique

$34.55 · Check Price on Amazon Full review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Waterpik Aquarius

The Waterpik Aquarius must stay plugged in, where the Waterpik ION Professional Water Flosser (WF-12) runs from a rechargeable battery. Electric Teeth, which reviewed both, makes the Aquarius its first choice for a countertop flosser and found its ridged rotating nozzle easier to turn than the ION's; the Aquarius holds 22 ounces of water against the ION Professional's 20.

Waterpik Cordless Express

The Waterpik Cordless Express runs on three AA batteries, where the Waterpik Cordless Advanced 2.0 Water Flosser is rechargeable and can take up to 8 hours to recharge. It has two pressure settings and a 5-ounce tank against the Advanced 2.0's three settings and 7 ounces. It has no timer or pacer, which the Philips Sonicare Power Flosser 3000 Cordless includes, and it costs less than the Philips.

Specs side-by-side

Spec	Waterpik Aquarius	Waterpik Cordless Express
Water Capacity	22 Ounces ( 651 ml )	5 ounces (148 ml)
Nozzle Types	7 flossing tips	2 flossing tips
Cleaning Modes	Floss and Hydro-Pulse Massage	2 pressure settings
Type	Countertop	Handheld water flosser
Dimensions	3.8 x 4.7 x 10.3 inches; 1.46 pounds	3.6 x 2.5 x 11.75 inches; 11.68 ounces
Charging Type	—	Battery operated
Battery Life	—	Typically at least 40 uses per set of AA batteries

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