RE: BIG vs. small
If you can afford the Xl or LST2 then go for those. If you are on a budget then go for the Losi Aftershock or Savage X 4.6. I have not read hardly anything bad about the NEW 4908 Maxx and its the same size as the Savage. The Aftershock is the cheapest of the bunch but its darn near bulletproof.