I have 2 BFG Tech GeForce 8600 GTS OC 256mb cards. I am buying a new motherboard for them to SLI on. But my friend suggested i sell both of those and buy a 8800 GTS 640mb instead of using 2 8600 in SLI. what is your guys recommendation... should i put them in my new motherboard and sli, or should sell them and get just the one graphics card?