I have been building rc monster trucks from scratch lately and i need help with what motor and esc i should be using. I built an MT4, Savage flux xl, and the erbe. i used the motor and esc from the savage to complete my erbe. (becasue i was excited to try it out) But now the savage is empty. So i watch the bidding on ebay for the erbe motor and esc so i can put back my savage. (i dont like taking away from other vehicles) anyways, i noticed as i was watching the bidding on ebay that the motor and esc for the flux was a little cheaper than the traxxas one. so should i just leave the erbe with the hpi stuff in it and by another hpi motor and esc for the empty savage? or do i buy the correct one for the erbe? (the mmxl) I know that the are pretty much the same and made by castle, but is the mm xl that much better? only asking because like i said......the hpi 2200 tork and esc is cheaper than the 2200kv and mmxl esc on the bay. What would you use or do?