looking for a good 2 port USB KVM

Hi all, :)

[I bought a new computer (AMD3000, X800GTO, DDR 1G) and I would like to connect my PC & my laptop to the same keyborad/mouse (bluetooth mx900 with a USB2 cable) and may add the screen.]

Can some one recomend a KVM USB or point to an artical ?
I have collected few links but I do not know to dif good from bad.

LEVEL ONE -> http://www.level1.com/products3.php?sklop=20&id=590212
ATEN -> http://www.aten.com/products/product...05011817049002
BELKIN -> http://catalog.belkin.com/IWCatProdu...duct_Id=164030
DYNAMODE -> http://www.dynamode.net/kvm/KVM-2200.htm
EDIAMX UA2C -> http://www.edimax.com.tw/html/englis...ts/EK-xx2C.htm

Thanks

MAT