Indeed, that decision wasn't an easy one, but I decided that it'll make my computer more "futureproof" than 10 years old XP. Anticipation of ArmA III also played a large part in that. Also, I heard Vista can be upgraded to Win 7 without reinstalling everything, so I'm considering this possiblity if it will appear. Since I'm not using EAX, have a lot of memory to spare (2GB at the start, I'll extend this if it'll not be enough) and don't really use my computer for anything besides work (which ussualy involves only MS Office and a web browser) or gaming, Vista doesn't have that many drawbacks for me. I currently can't afford going directly to Win 7 and my new card won't support DX11 anyway, only DX10 (this Vista copy was originally intended for my mother, but she is VERY sensitive about UI changes and Vista interface was too radical for her).