I think I am going with 4870x2. I am not changing card actually. I got it on Nov 08, and returned to Amazon right before I left for vacation. And a month later, it dropped $100. Power of capitalism!
But having a X58 and not going multi cards makes me feel like wasting resource.
4870x2 will cost me roughly $375, definitely the best performance, but the driver might be a problem. Also the Nvidia cards are more OCable.
I will have to wait a little to see which card brings up the best deal. :)

