I have watched many BF3 trailers and thought it was a potential purchase. Having spent at least 10 hours on the demo, I think a purchase is unlikely. There are so many graphical glitches it is unbelievable. When you get shot, and you see the killer, quite often the camera goes underground or shows a black rectangle. I played one game where one of my teammates was constantly followed by a giant blue and white "fence". I think I won't be buying.