I've had the XR3 and its a great radio and I've never had a glitch and the servos aren't as bad as the Futabe S3003. You can actually used them to race with. Once you start looking for every advantage in racing, you will need a new radio. Even though the Futaba has exponential, you really won't be able to take advantage of high speed digital servos without some servo speed control. This brings you to the realm of the KO Mars, Airtronics M8, and the Futaba 3PJ. (I don't know about the Lynx 3D).
Finally, as everyone else recommended, you need to feel comfortable with the radio. Try to hold each one for a while. Frankly, I hate the look of the Lynx 3D, but that's just me.