I was using a Novak GTB 5.5 with a 1/10 4wd buggy and that was quite fast but I imagine the CRT .5 would probably be heavier. I'm just in the position at the moment of probably not being able to afford a new charger and lipo cells as well :( An MM setup is usable with 6 cell nimh but not as good as lipo I know. What KV MM would you reccomend?