Chris - Good idea, except I think i'll do the oposite because i use the back brakes more
kramnnim - also good, but my bike shop was talking about a basic wahoo, and then adding bb7's in their shop
251 - true, you dont need them for streams and mud, but i realy don't like loosing power everytime i hit one, and cleaning the rub-off off the rims after everyride to keep them workin
still not sure what i'm going to do, although leaning more towards the upgrade route