I don't believe anyone has actually said it yet, but the radio system is the one area in radio control that you will be doing yourself a favor to buy the very best system you can possibly afford. Airframes will come and go, some simple and cheap, some more sophisticated and more costly, but the one thing that remains constant is the transmitter in your hands. Decide what brand you prefer, and all the major brands are producing fine radios, and then determine the very best you can afford and then save some more money and buy better. Otherwise, if you stay in this hobby, you will end up with a cabinet full of useless radios and at that point, it will have been cheaper to buy one really good radio.