usb bluetooth adapters

Hi,

i'm planning to get me some usb bluetooth adaptors, to be used on my lapt=
op and my wife's, on
windows vista and opensuse 11.2... my requirement is that they are small =
enough to be simply
left in the usb port, similar to the receivers on new logitech mice.

Are there any models/brands that are to be recommended, or to be avoided?


bye,
MH