I have this transmitter, it does everything you will ever need. I made the mistake years ago when I got back into the hobby of buying the best car and electrics out there but bought a cheap radio. You may change car every now and then but arguably, your radio should be your most important purchase, look after it and it will outlast many cars.
http://www.racing-cars.com/pp/Manufa...O/KO80561.html