The main reasons I say Moab is 'cause:
1) I'm planning on going this summer anyway
2) The trails vary so much, any Burb, especially some not as hardcore, can actually do some of the trails
I have open front and rear, but I hope to put a locker in the back before the summer and upgrade to stronger axle shafts, but my front will still be the stock 30 spline stuff and open. I know for a fact, I could never make it through the Rubicon.
Colorado, around Ouray, wouldn't be so bad because I think everyone here can do those trails, even stockers. It'd be open to more people.
I don't know, just my thoughts...