I almost hate to admit it, but...
Bestbuy. Since the prices are the same from site to site, and since I can get anywhere from 18 months to 3 years free financing, they actually end up being the best value. There replacment plan is more trust worthy than some others.
You can get 5d, 7d, "and lower" cameras. Same is true for lenses. They have the newest 70-200s and 24-70s. The bestbuyforbusiness may sometimes carry the bigger stuff, but without the benefits. For that stuff, I'd go to B&H. I trush them, although I don't necessarily trust their replacment program since it isn't actually them handeling it.