I'm a casual gamer on both PC and Xbox, and I have to say, MW is a huge investment for IW/Activision. They're obviously going to raise the price for th PC because PC gaming is just getting bigger and bigger! However, The servers not being dedicated just did'nt hit it for me, so i gave up on the PC and went to Xbox....
Also i had an idea, why not do something where, for one day and one day only, they connect the servers from PSN/PC/Xbox and just do like a moshpit of PC vs PS3 vs Xbox?