traxxas has a really good line up for beginners!!! go to traxxas.com and click on products and then you will see it labeld nitro,electric and so on click on the buttons and the lists of that kind of rc will show up...
the taxxas rustler is a good little rig, the bandit - slash2wd/or4wd- summit(reg/or 1/16 scale)E-Maxx- E Revo - stampede 2wd/or4wd -those are some good electric from traxxas.. and then there is the nitro version of each of them exep the bandit.. I have yet to see a nitro bandit..... I think that would be cool!!! my kids have been playing with r.c's for so long so they got their first nitro last x-mass Redcat Volcano-one is a blue truck,red/white baja bug/ and a black big rig.. I have more fun when they runn with me than any other time!!! good luck and you will get alot of feedback on this question!!!
Another good company I hear is Losi........