What do you plan on doing with one? Race or run around your back yard?
Off road or carpet/ on road?
Car, truck or buggy? 2wd or 4wd
Is there a hobby shop in your area for parts and assistance? You'll need both
I race ( if you can call it that) electric cars on carpet oval at my local hobby shop ( LHS).
There are different classes of cars and trucks and different rules apply.
Short Course truck is the most popular models at this time. One of the shops had 90 trucks show up on a Thursday to race!
If you plan on running a truck in your back yard / empty lot, look at Traxxas. They seem to be very durable and very popular. You can even get parts at PEP Boys, although their pricing isn't great.
Electric seems to be the easiest/ cleanest but you have to deal with chargers and batteries.
Nitro has its quirks as well. Tuning, noisy, smell..
Neither is cheap.
Both can be fast.
I frequent Hobbytalk.com and RCTech.net for BST and info.