i'll second the g.skill modules as well
mine are the ones that run at 4-4-4-12, its 224$ on new egg
they look good as well :)
whoops crap, sorry thought you wrote on the p5n, disregard this :)
I'd wait till end of January and see if the r600 is better, and if nothing else, the 8800 should drop down in price at that time, then you can use the money you saved for something else!