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.

Verdict is reader-supported. As an Amazon Associate we earn from qualifying purchases. Some links on this page are affiliate links — if you click through and buy, we may earn a small commission at no extra cost to you. Our ratings are sourced from independent publications, not sponsors.

The short answer

Dyson V8 comes out ahead by a clear margin (3.5 vs 3.2). Dyson V8 is best for: Small apartments and budget-conscious buyers who want real Dyson build and filtration without the V15 price. Read the strengths below before deciding.

Higher ratedRanked #4 in Best Cordless Stick Vacuums

Dyson V8

3.5

3 sources$400.59as of Oct 4

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
— Sealed HEPA filtration captures 99.99% of microscopic particles
— Frequent sale pricing under $300 makes it the cheapest Dyson option

Watch-outs

— No smart sensor, no LCD, no adaptive suction

$400.59 · Check Price on Amazon Full review →

Ranked #5 in Best Cordless Stick Vacuums

Shark Cordless Detect Pro IW3511

3.2

3 sources

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

— Under 4 lbs at the handle, the lightest full-size cordless reviewed
— 60-minute Eco runtime is competitive with the Dyson V15 at half the price
— QuadClean multi-surface brushroll switches modes between hardwood and carpet without head swapping

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

Buy at bestbuy.com Full review →

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

← See the full ranking of best cordless stick vacuums