The latest Dyson Gen5 Detect has some exciting improvements over the Dyson V15 but costs 49.6% more compared to the (well-tested: 8.1) Dyson V15. If you want the best of the best, go for the Dyson Gen5 Detect ( ~$950) with (a few) cool new laser features. If you're clever though, go for the Dyson v15 ( ~$635 ), and save yourself $ 315. The fCZXj.