Head-to-head · Best Cordless Stick Vacuums

Dyson V8 vs Shark Cordless Detect Pro IW3511

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

Dyson V8 and Shark Cordless Detect Pro IW3511 score essentially the same (3.5 vs 3.5). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Ranked #4 in Best Cordless Stick Vacuums

Dyson V8

3.5

3 sources1 derived$349.99as of Aug 1

The redesigned V8 keeps what most buyers wanted from Dyson, sealed HEPA, an anti-tangle brushroll and a confident detachable handheld, while dropping the price below $300 on sale. You lose the V15's laser, particle counter and 240 AW headroom. What remains cleans short-pile carpet and hardwood reliably for the cost of a budget Shark. The V8 is the value-tier Dyson that still cleans like a Dyson.

Strengths

— Detangling Motorbar cleaner head solves the V8's old hair-wrap weakness
— Lightest Dyson cordless at 5.6 lbs handle weight
— 40-minute Eco runtime is competitive at this price

Watch-outs

— 115 AW peak suction is less than half the Dyson V15's 240 AW
— Boost mode lasts only 7-10 minutes per Vacuum Wars and TechGearLab testing
— 0.53 L bin requires more frequent emptying than the V15's 0.76 L

$349.99 · Check Price on Amazon Full review →

Ranked #3 in Best Cordless Stick Vacuums

Shark Cordless Detect Pro IW3511

3.5

3 sources2 derived$269.99as of Aug 1

No serious cordless on this list is lighter than the Cordless Detect Pro, and it ships with the only auto-emptying base in the under-$500 tier. Shark trades raw suction for usability: less power, but smart-sensor automation and a hands-off base that hides emptying for up to 30 days. Buyers who hate touching dustbins and want a featherweight wand for stairs should start here.

Strengths

— Auto-empty base seals 30 days of debris without hands-on emptying
— Under 4 lbs at the handle, the lightest full-size cordless reviewed
— Four Detect modes (DirtDetect, EdgeDetect, FloorDetect, LightDetect) handle edges and dark corners automatically

Watch-outs

— Suction maxes at 120 AW, half the Dyson V15's 240 AW
— Boost mode runs the battery flat in under 15 minutes
— Base model ships with only a crevice tool; other accessories are sold separately

$269.99 · 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

Dyson V8

Less suction than the Tineco Pure ONE S15 Pro and far less than the Dyson V15 Detect, but the only sub-$300 vacuum with full Dyson HEPA sealing and the new detangling Motorbar head.

Shark Cordless Detect Pro IW3511

The only auto-empty cordless on this page.

Specs side-by-side

Spec	Dyson V8	Shark Cordless Detect Pro IW3511
Suction	115 AW	120 AW
Battery Life	40 min (Eco) / 7-10 min (Boost)	60 min (Eco) / 40 min (Auto) / under 15 min (Boost)
Charging Time	4 hours	3.5 hours
Dustbin Capacity	0.53 L	0.33 L (vacuum) / 30-day base
Filtration	Sealed HEPA (99.99% particles)	HEPA, anti-allergen complete seal (99%)
Tools Included	4 (Motorbar, combination, crevice, Hair Screw)	1 (crevice; auto-empty base, others sold separately)
Weight	5.6 lbs	2.6 lbs (handle) / 7.5 lbs (full)
Warranty	2-year manufacturer	5-year limited
Wattage	—	240 W

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