Don't push it. I may know alot but I have no experience. I am only going to run my nitro r/c car on Thursday when it is going to arrive. I don,t even know how how really big these things are. Hehehe. I'm only 14 years old. Anyway, if you are looking for good radios, receivers, and servos, I think Futaba is good. I see alot of HPI RTRs and Kits that have these radios. They cost $50.00 and more according to what type you are going to buy.
I like the Futaba Magnum Sport Radio. You can find new/used and cheap ones at www.ebay.com.