Actually, wrenching on a mid-grade RC is not that different than working on any of the HSPs. Yes, there are differences in designs between these beginner RCs and the mid- to high- grade RCs, but as far as turning a screwdriver, tuning an engine, adjusting the suspension, working on a mid-grade RC is just like working on these.

So, if you decide to venture out and get like a Revo or an LST, your skills in working on these will be carried forth into these other RCs also.

All I'm saying is the mid- to high-grade RCs are no harder to work on than the beginner RCs.