I have the cordless precision controller, I also have a cordless phone and wireless networking for my home pc, all 3 in the 2.4ghz range. And I have not had any problems. I like hte precision alot, it also has longer battery life compared to the original model. It's a great contorller, I have been buying them up for xmass gifts. I got my precision for 37.00 on ecost and another on buy.com.
Hope that helps,
GS