you might want to have a quick look at nvidia cards again. I'v seen the 680 & 670 drop €200 and €150 respectively some places in the last few days with the 770 coming out.
also make sure you get a good cloth mousepad to go with your deathadder. It's much lighter than you'ld expect and you'll want the extra friction.
also If you have big hands, the side buttons and (particularly) the scroll wheel are quite a bit further towards the rear of the mouse than I'd like. so if you have long fingers you may find this offputting too.