I'd second comments on the 270's. I just put 2 of the 270x's in and I love them. If I had it to do over I would probably get regular 270's for the reasons stated above. Bang for the buck though, they were the best I could find after doing some research. They're also much more readily available, without the $100 or more mark-up the 280x and 290x's have seen. Good luck to ya though whatever you decide.