Sorry for delay

Just a personal pref. They are not as efficient as the like of APC, there is greater question over strenth particularly in the event of backfire, and they will not and should not be put to task after any kind of scuff. Ive seen people flick starting wood props with a safety stick, which is never a good idea in my mind on these smaller engines, it can damage them enough to cause failure in flight. A starter or glove should be used so as not to damage the prop.

Economy route on the big stuff 30 - 40 cc plus there are some good wood blades but the physics and loads are different here. APC props are heavy in the bigger sizes, so your non wood alternative ends up being carbon which will be better than wood for performance but cost a good bit more.

I switch to wood at 18" dia and above in general.

Not sayin Im right, just saying what I believe and practice. I know wood blades are quite popular over there in USA.