The kind of cordless vacuum you want depends on whether you are interested in a stick vacuum or a handheld vacuum. Both of these can be found with cordless design. Personally I don't think any of the brands mentioned are particularly good. If you are in the market for a stick vacuum consider the Hoover Linx, the Eletrolux Ergorapido or perhaps one of the Black & Decker stick models (if you can find these here). You may want to view the list of high quality stick vacs on Vacuum Cleaner Advisor. If you are more interested in cordless handhelds then the Black & Decker model PHV1800CB is the way to go. It gets very, very good consumer reviews and has a long lasting battery charge (often a big problem with cordless handhelds).