It all depends on what you want to do, do you want to race or just bash?
Onroad or offroad, price limit, truggy, buggy or monster truck. For buugy i would go with a hotbodies D8, a losi 8ight 2.0 kit, or a jammin X1x-CR pro kit and putting in an os .21 engine. But price is the biggest factor, non of these come with an engine or a radio. The D8 is $380 the 8ight 2.0 is $650, and the jammin is $520 a basic engine and radio set up will set you back another $300 for any of these. Or for $300 an ofna hyper 7 TQ black RTR is a solid investment, which is similar to what i have. There is a lot more but your best bet is to go with ofna, losi, hotbodies, hpi, team associated, kyosho, traxxas for certain things like the revo.