I recently got an AX10 ARTR to do up. Currently running the integy 55t lathe motor through a mamba micro pro on a $8 1000mah 3s lipo. Runs forever and has more power than I need. I run a hobbico cs170 TG through a CCBEC.
Not too impressed though, in stock form my revo (converted 3.3, basically stock) crawls better than it
Maybe after a few mods I can get it to do something cool though. So far a waste of money IMO.