I would also recommend an APC 13x6 on this fun fly with a .72. The 14x4 generally stinks on a plane like this. You really don't need the additional thrust that a 14x4 will give you on this light of a plane. The 13x6 will give you an instant blast of air when you need it making 3D stuff a little easer. I think the 4 pitch props are better on the 2 strokes. Some people swear by the 14x4, but for the life of me I can't see why.