What WLan-Adapter?

Hello,
I need a new WLan-Adapter that works with Windows 7 x64.
Now I have to decide between 3:
Linksys WUSB600N:
http://www.linksysbycisco.com/US/en/products/WUSB600N
AVM FRITZ!WLAN USB Stick N:
http://www.avm.de/de/Produkte/FRITZBox/FRITZ_WLAN_USB_Stick_N/index.php
3Com� Wireless 11n Dual Band USB Adapter (Does this work with Windows 7 x64?):
http://www.3com.com/products/en_US/detail.jsp?tab=features&pathtype=purchase&sku=3CRUSBN275
What shall I buy?

Thanks a lot!
Answer #1
3com in my opinion =D, I don’t use windows so I’m not sure if it will work with 7.
Answer #2
Thanks for your reply
I would pick the 3com, when I am sure about that.
It is also more expensive, than the other two.