Just to let you guys know.

I am running mine on a a Hacker A50-12S on 15 x 10 and CC80 esc. I am peaking at 1200W get a good 8mins of agressive aerobatics on FP 5S 3700. My pals are running the stock setup and the speed is higher with the 6S packs, but the 5S still has the torque to pull round the manouvers. I had a Hyperion 4025-10 and it was more power, but I had to run a smaller prop (13 x 8 or 14 x 8) which I think the plane looses some of it magic of swinging a larger prop. Also I found that flight times were down a little.

Cheers

Kris