I think there are a lot of people that still are under the impression that the issues that were reported early with the DX7 systems was DX7 system related. They still dont understand that the problem was not with the equipment, the problem was low voltage cutoff due to low batteries. I have talked with Horizon, and several of the power distribution system guys and they all seem to agree that you have to be sure that you do not hit that cutoff voltage. There are 2 PD systems companies that have clearly suggested that I not use 4.8V on JR, Spektrum or Futaba in demanding planes. It takes about 8 seconds for the system to reboot from an LV shutdown and that is too late. But this is true with ALL systems regradless of what freq band. They all have low voltage cutoffs. I think it just got blown out of proportion because it was a new system so the blame automatically fell in the wrong place.

Again,
Solution 1. If you are going to run 4.8V or any voltage but ESPECIALLY 4.8V with low capacity batteries be sure you understand the loads that you are inflicitng on the battery so that you can have a clear understanding of when its time to stop and recharge.

Solution 2. If you are flying power hungry servos, just move up to a high capactiy and high output 5 cell NiMH or 2 cell Lithium or A123's or something that is not as prone to hit <4V under load as long as it still has a decent charge.