The type of RC really depends on your intensions. If you would like to bash, go with a traxxas. parts are cheap and can be bought at almost every hobby shop. If you want to maybe race a little, go with any of the name brands, losi, associated, durango, mugen, kyosho, hot bodies, the list goes on. if you want to maybe race and bash then I would pick a short coarse truck. they can be very fast with a brushless system. If you think you have a lot of interest in racing, I would suggest a 1/10 2wd buggy of a 1/8 4wd buggy. these classes are very competitive. I race both and really enjoy them.
As far as the question should you go nitro or electric, I would recommend getting a electric brushless system. I race nitro and I can tell you there is quite a bit of maintenance involved with those little engines. brushless is basically plug and play. take care of your batteries and your ready to go. Hope this helps if you haven't already made your decision.
Tons of Guns