Sports camera advice? Skateboarding and MMA.

I'm going to check out the D3 and the D700 too

The longer i'm thinking about it, the more important weatherproofing is too... is the 7d weatherproof like the pentax? I gotta be honest, I'm really biased because of the pentax waterproofing. Too bad I don't hear good things about their accurate focusing during burst rates, or I would cop one asap. Or is this just untruths spewed by haters?

thanks for all the info guys!