best at this alt , Satios or os.
one guy has satio 52? on a aerotech bf110 72"
another os 70 on 80" wing b-17
I had satio .65 on 72" p-38(over powered),
Ys.53 on 72" aerotech mosquito( ys 53 dicontinued and un reliable, but sounded cooool..)
American eagle b-17 123", Satio .65 3 blade 11x7s

Denver r/c eagles v.p.
Flying at cherry creek state park