The RC8T is a pretty awesome machine, for how much fuel I pump through mine, I can say it's as tough as any, and tougher than some. It handles like a shark, and gives you alot for the price of admission.
If you're already invested in a Mugen ( another excellent platform ), then stock up on the breakable parts, it's much more cost effective that way. Now if you didn't like how the Mugen handled, then maybe jump ship, but if it drives right, then keep driving it.