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Dyson V12 Detect Slim vs Dyson V8 vs Shark Stratos Cordless
The Dyson V12 Detect Slim comes out ahead for most homes.
The verdict in 10 seconds
The Dyson V12 Detect Slim suits you if
- You live in a smaller home or apartment with mostly hard floors
- You want something light enough to carry up stairs and into the car
- You have pets that shed on the couch and other upholstery
May not suit you if
- Your home is mostly thick or deep-pile carpet
- You'd rather not empty the bin during every cleaning session
- Long-term durability is your top priority
The Dyson V8 suits you if
- You live in an apartment or a smaller home
- You have pets or carpets and rugs to keep hair-free
- You want something light for quick cleanups, stairs and the car
May not suit you if
- You have a large home to clean in one go
- You mostly have hard floors with bigger crumbs and spills
- You want auto-adjusting suction, a screen or a swappable battery
The Shark Stratos Cordless suits you if
- Your home mixes hard floors and carpet and you want one vacuum for both
- Someone in your home has allergies and you want strong filtration
- You often clean under beds, sofas, and other low furniture
May not suit you if
- You want something light and easy to carry up and down stairs
- You have a large home and need a long run on full power
- Strong scents bother you, since the built-in freshener is hard to avoid
The short version
The Dyson V12 Detect Slim is the stronger all-rounder of the three. The Dyson V8 is still the better fit if you live in an apartment or a smaller home. The Shark Stratos Cordless is still the better fit if your home mixes hard floors and carpet and you want one vacuum for both.
We researched 21 expert reviews, analyzed 157,990 owner ratings and comments across 15 sources for the three, and cross-checked them into one verdict, so you don't have to.
See the evidence
The scoreboardProduct Review score 78 vs 66 vs 69 · reliability 58 vs 42 vs 45
| Dyson V12 Detect Slim | Dyson V8 | Shark Stratos Cordless | |
|---|---|---|---|
| Product Review score | 78 | 66 | 69 |
| Experts | 81 | 69 | 80 |
| Owners | 84 | 75 | 70 |
| Reliability | 58 | 42 | 45 |
| Report problems | 17% | 23% | 22% |
| Evidence | 8 reviews · 507 comments | 6 reviews · 524 comments | 7 reviews · 511 comments |
| Typical price | $500–$650 | $350–$520 | $330–$500 |
● marks the better number on each row.
Experts vs ownersExperts 81 vs 69 vs 80 · Owners 84 vs 75 vs 70
Dyson V12 Detect Slim
Dyson V8
Shark Stratos Cordless
How we reached each verdictThe numbers behind each model's score
Dyson V12 Detect Slim
Seven of 8 expert sources tested the V12 Detect Slim hands-on, and they broadly agree it is a light, maneuverable vacuum that excels on hard floors, with an expert score of 81. Owners are positive too (owner score 84 from 507 comments): 45% praise the light weight and 36% the suction, while 16% complain about the small bin. Reliability is the weak spot, scoring 58, with 17% of owner comments mentioning failures and 5% describing a unit that broke or died. Retail ratings are strong overall (87 from 33,118 votes, with 21,772 five-star ratings), but smaller retailer listings average only 3.79 stars across 126 ratings, and battery opinions are split almost evenly (12% negative vs 11% positive).
Dyson V8
All 6 expert reviewers used the V8 hands-on, and owner evidence is deep: 524 comments, 485 of them first-hand. Owners mostly like it. 40% praise its suction and 25% mention how light it is, but battery opinions split: 23% are positive and 17% are negative. 5 of 6 experts flag short runtime, especially in the roughly seven-minute max mode. 4 of 6 say it pushes larger debris on hard floors. The weak spot is reliability, which scores 42. 23% of owner comments mention failures and 6% say the unit broke or died. Consumer Reports' results are paywalled, so the expert view effectively rests on 5 detailed reviews.
Shark Stratos Cordless
Six of the seven expert sources tested the Stratos hands-on, and nearly all praise its floor cleaning, with Vacuum Wars recording a perfect 100 on carpet deep cleaning and TechGearLab scoring hardwood at 97%. The recurring weaknesses are runtime and weight: five of six hands-on reviewers flag short battery life (about 10 to 11 minutes on max), and four call it heavy or bulky, with Consumer Reports and Reviewed listing it at roughly 9 and 8.8 pounds. Owners largely back the cleaning praise (28% mention good suction), but reliability is the soft spot, with a reliability score of 45, 22% of comments mentioning failures, and 9% saying their unit broke or died. Evidence on long-term durability is thin, only four sources published scores, and Consumer Reports' verdict is paywalled, so its input is limited to specs.
Where each one falls shortThe most common complaints
Dyson V12 Detect Slim
- Very small bin needs frequent emptying
- Weaker on carpets, especially deep pile
- Boost mode drains the battery in under ten minutes
Dyson V8
- Short battery life, especially on max power, and slow charging
- Pushes larger debris around on hard floors
- Reliability concerns and a small dust bin
Shark Stratos Cordless
- Short runtime on max power and slow recharge
- Heavy and bulky, especially for handheld use
- Reliability concerns, with some units breaking down
Quick answers
Which is better, the Dyson V12 Detect Slim or the Dyson V8 or the Shark Stratos Cordless?
The Dyson V12 Detect Slim, for most homes. The Dyson V8 is the better fit if you live in an apartment or a smaller home. The Shark Stratos Cordless is the better fit if your home mixes hard floors and carpet and you want one vacuum for both.
Based on: Product Review score 78 vs 66 vs 69.Which is more reliable?
The Dyson V12 Detect Slim. It's the least likely of the three to give you trouble.
Based on: Reliability 58 vs 42 vs 45; problems mentioned by 17% vs 23% vs 22% of owners.Which is easier to live with day to day?
The Dyson V12 Detect Slim. It's the one people are happiest with once it's home.
Based on: Owners score 84 vs 75 vs 70, from ratings and comments.Which is cheaper?
The Shark Stratos Cordless usually costs less.
Based on: Typical prices: Dyson V12 Detect Slim $500–$650; Dyson V8 $350–$520; Shark Stratos Cordless $330–$500.As an Amazon Associate we earn from qualifying purchases. It never changes a score.