Darkside or Calandra. But see what is carried at your local hobbyshop and what most of the racers are using.Brushless and lipo are the way to go. What works one way( round cells) is a pain in the neck to make work with the 1 cell lipo. Once you try a brushless system with lipo you'll be spoiled.
Team Epic/Trinity -Michael Bruce Hobbies-Team CRC ,Kimbrough Products GForce and RJSpeed.
WGT-R, GT Racing USA (17.5 foam),RJSpeed- Legends &Spec Mod, MudBoss and 386 RaceWay.