Currently I play on a 1920x1080 monitor with a 6870 in my system and I am getting the itch to put something a little more powerful in there, thinking maybe a 6950 2gb (hopefully unlocked). I can sell my current card to a friend for $130, which would make the total cost right around $150-$160. I have thought about crossfire and that's within my budged but I am a little bit concerned with the difficulties I've heard people having with it, i.e. microstutter and temperature issues. Are either of these things worth it? Or will I need to spend more to see a decent performance increase?