Radios and servos are a buy quality once or buy twice proposition. In this hobby, these days, corners can easily be cut on motors, esc's, etc and you'll get 98% of the name-brand performance for 30% of the price but that's not the case with radio gear. It's hard to have fun with a radio that the car won't react to until it's gone ten feet after you've turned the wheel because the lag is so bad or with a servo that might deliver the listed specs or might be best timed with a sundial through it's motion but you don't know what you've got until you get it.
You're in a bind because you need several sets but this would be a good thread to take a look at for you:
http://www.rctech.net/forum/radio-el...io-basher.html