I can say that as of lately, I've been busting a lot of Team Fortress 2 on my PC. My XBOX 360 has been getting limited gaming time.
However, I think that will change once the new Halo 3 map pack comes out which is right around the corner.
And by the way, I think Gears of War 2 is going to the next Halo 2.
Bobby is that you? Wait... I don't know a Bobby... WHAT IS HAPPENING TO ME!!