I have two 100" 100cc powered planes - an Edge 540 and Comp 300SX. Both use an AR9100 Rx, two switches and two eneloope 6V Battery packs. The AR9100 has a higher current BUS, but I also run the same setup in my RC Pilot Extra 88" using an AR7000 with the extra battery plugged into the throttle via a Y lead.
At the end of the day - everybody will have a different opion so find what works best with you and your budget - without compromising safety.