Which is better for pet hair?

The Shark PowerDetect Speed, because its two brushrolls and direction detection pick up debris in both forward and reverse passes. The Eureka's anti-tangle brushroll helps with hair wrap but uses one roller.

Which has stronger suction?

The Eureka publishes 25,800 Pa. Shark calls PowerDetect its most powerful cordless suction but does not publish a Pa figure, so a direct number comparison is not possible.

Which runs longer on one charge?

Shark claims up to 70 minutes; the eBay listing says up to 60. Eureka claims up to 60 minutes. Real runtime drops in boost mode on both.

Is the Shark worth the extra?

It is not extra right now: $159.66 at eBay versus $176.98 for the Eureka as of November 4, 2026. The Shark's edge is dual brushrolls and the bendable wand, not price.

Can I replace the battery on either?

The Eureka's lithium-ion battery is detachable, so you can swap a spare or replace it. Shark does not list the PowerDetect Speed battery as removable.

Which is better for under-furniture cleaning?

The Shark, whose MultiFLEX wand bends to reach under low furniture. The Eureka uses a standard straight wand.

Eureka ReactiSense 440 Smart Cordless Stick Vacuum vs Shark PowerDetect Speed Cordless Stick Vacuum

Both are cordless sticks with HEPA filtration and floor-type sensing, so the choice comes down to price and cleaning style. The Eureka ReactiSense 440 is $176.98 at eBay as of November 4, 2026, and the Shark PowerDetect Speed is $159.66 at eBay as of the same date, so the Shark is about $17 cheaper right now. Pick the Eureka for stronger rated suction and a removable battery; pick the Shark for dual brushrolls, reverse-motion pickup and under-furniture reach.

Today the Shark PowerDetect Speed Cordless Stick Vacuum costs $17.32 less at its best price.

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