Hmm, as a begginer meself I am not sure. I just use the cheap Master airscrew (APC??) plastic ones.

That said, your plastic and composites are far more durable than wood, however wood will likely break before removing fingers if you get your hand in the prop [X(]

I use the plastic because A) its cheap, and B) i still tend to get prop strikes on landing now and then, and cant afford stock in the wood prop makers companies..