i feel nitro is okay for beginners too. its not that much more difficult, plus its more fun

. for beginners you could probably take a look at hpi rs4 3. those are rtr and parts are available cheap at most places for them. you can bash around and hop up or upgrade if you want to race later. if you want to spend a little more, an rs4 ss might be good. if you have a store that carries parts for it, a yokomo gt4 rtr would be a kicka$s beginner car. you'll have to change the motor to being race legal though if you want to race.
otherwise other ones to ceck out for beginner nitro:
ofna ob4- not greatest parts, but cheap, and easy to hop up, plenty fast
try to avoid the 4tec
nitro tc3 rtr- make sure you get 2 speed tranny
id recommend the nitro rs4 rtr the most though. easy to get going, great beginner car.