XP will provide better fps and export time. Unless you are planning on doing a lot of editing though, I don't think it would matter. Don't let one program make your decision for an os.

So far, XP seems to be the best choice. If you need support of Direct X 10, then you'll need vista. Here are some benchmarks.


http://www.tomshardware.com/reviews/xp-vs-vista,1531-8.html


but im running vista, and i have had no problems with it and the media just overreacted...