I would check out what your LHS carries the most of and go with that. Sure, you can shop online, but it kinda sucks paying $5 shipping for a $2 part, not to mention waiting for the postman.
That said, my Ofna Hyper8 and MBX5 have both been quite solid. I've bashed my Hyper8 a lot and the only things that broke (chassis, front shock tower) were the result collisions from high speed and inanimate objects.
