Radio selection is really about knowing what your planes are. If you plan to stick with fairly simple sport and aerobatic planes for the next 4-5 years, then a 6-8 channel computerized radio will serve you well. Buying anything more is just a waste of money IMO. If you plan to get serious about IMAC competition or want to fly a complicated scale model with flaps, retracts, landing lights, etc, then you'll need more channels and more sophisticated programming for that project. So what are your RC goals for the foreseeable future?