Ive always tried drivers that are meant to be optimized and better than the forceware jobs but ive never noticed any difference so i just stick to the WHQL stamped drivers from nvidia, im currently running 93.71, there are some newer ones out but these ones work perfect for my card so ive stuck with them

(just incase anyone is confused when i said WHQL) http://en.wikipedia.org/wiki/WHQL