Dyson 的吸尘器应该没有什么哪款最好的吧, 都是一样的 technology? The only difference is the type (upright, canister, and cordless) and size. At least for upright, Dyson has auto height adjusting brush head, so it can be used for any floor, carpet or hard floor, like hardwood or ceramic tiles. For upright, there are compact size, Dyson Ball Compact (previous model DC50 ), regular size, Dyson Ball (previous model DC65), and the new large size, Dyson Cinetic Big Ball. Within each size, there are the "bare bone" model, like Ball Multi Floor, without much accessary; Ball Allergy with several accessories; and Animal / Complete with some / many accessories plus the Tangle-Free Turbine Tool. With each size and step up, it's about $100 more in price. Not long ago, Target had a 70% off deal for Dyson Ball Allergy, MSRP $500, but selling for $150. You can google: Brickseek Target inventory checker. Then on the Brickseek site enter your Zip code, and Target DPCI for Dyson Ball Allergy: 072-07- 0759. You might still be able to find the deal in your area. You may also find some previous / discontinued models (still brand new and sealed) in some stores, like Home Depot, selling for real cheap.