Wireless adapter compatible with Ubuntu

I currently have a Netgear Wireless G PCI adapter and have had very unreliable connection.

I want to use a a USB adapter instead to free up some space inside my computer.

I was considering this product...

http://www.tigerdirect.com/applications/SearchTools/ite...

or maybe this one..
http://www.tigerdirect.com/applications/SearchTools/ite...

The problem is I am using Ubuntu, so will these adapters work well with Ubuntu? What is my best adapter option? Is it one I didn't mention? Help is greatly appreciated.