dus10lee,
Well, I'm going to be the one that has something to say that will sound ok to you. I totally understand your situation. The radios that you have listed are fine radios. I own 3 Airtronics computer radios (RD6000, Radiant, Quasar) and 6 Airtronics 6-channel Vanguards (they are the VG400 and VG600) and they are all fine radios. My main throw around plane is controlled with a "plain jane" 6 channel, no frills, no puter, no mixing, no expo, radio and it does just fine. Buy the radio that you can afford now and fly. When you can afford better later you can buy a new computer radio. You can buy a computer radio on the same channel as the first one and use that to control both planes. What I didn't see pointed out above is that in a lot of cases the flight packs (battery, switch, receiver, and servos) cost almost as much as a non-computer radio.

Hope this helps

Ken