Tony,

do you use STOCK motor, or is it in any way modified. Also, how many flights have you made on one motor, and what maintenance (and after how many flights) if any. What defects you had (if any).
Need to know before making the big step...

So far I use prototype Czech outrunner (Kral) on my 4,4 kg Cayenne model, with 2s 2600 PolyQuest. With 20x11, the static draw is 55 A. The power is good, but not great - perfect for calm day, but a bit lacking when the wind picks up...

I suspect that going to 22x12 in itself might help... and geared motor in general is supposed to be slightly more efficient than an outrunner (dont ask me why). 14XL seems to be my choice for now.

David