I also fly with a DX6 (T-Rex 450-SA). I have not had any problems yet (about 8 months with the DX6, I had a Futaba 72MHz PCM before that). My 72MHz setup was almost un-flyable due to glitching and I could not seem to solve it with ferrites or layout changes. The DX6 and AR6000 have been rock solid for me. I have not had to re-bind since my initial setup. I have also heard about the lock out issues, but luckly have not hit it myself. I have even flown a 200mw 2.4GHz camera on-board without issues. I really did not think that I would be able to use my video down-link on 2.4GHz right next the reciever on the heli, but it did not cause any problems.

On an unrelated note, I recommend modifying the DX6 transmitter with a switched-mode regulator (you can search for this modification). This change a least tripled my battery run time on the TX. I fly most days and can go a full week or more with one charge on the TX now.

Steve