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.

The short answer

Shark Cordless Detect Pro IW3511 comes out ahead by a narrow margin (4.1 vs 4.3). The gap is mostly about Apartments and small homes where stair lifting matters and the buyer wants to skip dust-bin emptying for weeks at a time. — read the strengths below before deciding.

Ranked #4 in Best Cordless Stick Vacuums

Dyson V8

4.1

$299

The redesigned V8 keeps everything most buyers wanted from Dyson — sealed HEPA, 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, but the V8 cleans short-pile carpet and hardwood reliably for the cost of a budget Shark. It's the value-tier Dyson that actually delivers Dyson cleaning.

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

$299 · Check Price on Amazon Full review →

Higher ratedRanked #3 in Best Cordless Stick Vacuums

Shark Cordless Detect Pro IW3511

4.3

$399

The Cordless Detect Pro is the lightest serious cordless on this list and ships with the only auto-emptying base in the under-$500 tier. Shark trades raw suction for usability: lower power but smart-sensor automation and a hands-off base that hides emptying for up to 30 days. It's the right pick for buyers who hate touching dustbins and want a featherweight wand for stairs.

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

$399 · Check Price on Amazon Full review →

How they stack up

Dyson V8

Cheaper than every other vacuum on this page except the eufy HomeVac S11 Infinity. 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

Lightest vacuum in this group at the handle, but lower suction than Dyson V15 Detect, Tineco Pure ONE S15 Pro, or even the eufy HomeVac S11 Infinity at peak. 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

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