I've been thinking about upgrading my video card lately. I currently have an HD 5770. I've been tossing around the idea of crossfiring. However, I'd rather upgrade to a better card and crossfire that when I'm feeling another boost. The two cards that have caught my eyes are the Sapphire HD 6870 Vapor-x and the PNY OC2-S GTX 560 Ti. My mobo doesn't allow for SLI so I'm leaning towards the 6870. I'm looking for comments or alternate ideas. Thanks.