I'm building a new system, and want to buy 2 cards, either in SLI or in Crossfire. Currently I'm considering the GeForce GTX 470 or the Radeon HD 6870. I read the best graphics card for the money thread, and it puts their performance at the same level at the ~$500 level. Any advice about differences between the two would be appreciated. Thanks.
APPROXIMATE PURCHASE DATE: January
BUDGET RANGE: ~$500
USAGE FROM MOST TO LEAST IMPORTANT: Gaming, watching hd-movies, 3d Design, Photoshop, Occasional video editing