Craig,

From a Powerbox Systems point of view there are no issues with any new powerbox. If you have an older unit (approx older than 18months) then it is probably wise to speak to Emmerich to get his view on whether it needs updating. Emmerich offers this free of charge which is great considering it was Futaba that pulled the rug out from under him with the super low voltage issue!

I have used a 14MZ and FASST in various models on 2.4 with no issues...

Skygate Hawk with 2 x 14ch RX on a PowerBox Royal
Turbo Raven with 8ch RX on PB Evolution
3m Extra 260 with 14ch RX on PB Competition
Boomerang XL with single 14ch RX on PB Royal
Various electrics on 4ch and 7ch RXs with no PBs

No problems on any setup. I ONLY use JR 8411, 8511 or 8711 in all these models so know these work 100%. Cannot comment on other brands/types.

Rgds,
Mark