ORIGINAL: jester_s1
4 pitch props are for hovering and pulling slow uplines in aerobatic birds. A trainer needs to keep some speed up to keep its controls effective and to deal with wind.
Shh.. don't tell this to my LT 40 that I learned on and am teaching my son to fly with.. as it flies perfectly with the lower pitch prop....
I would hate for it to find out and stop flying well....
Either works fine...
props in that range are cheap.
Have an open mind and try a few out and see which one you like best....