I've had 3 props on my 1997 25 HP Johnson since I purchased it new. First, the new one, then the 2 I bought. I might have paid $65 apiece for the two Solas.
My engine has splines, not a sheer pin, so if I hit something hard, I stand the possibility to do some damage, but it would talk a hell of a hit based on the strikes it has taken so far. I fish a hardpan river with lots of ledges and shoals.
Think about the weakest link in a chain. An aluminum prop is that very link. I want that to give as opposed to a drive component or gears. This is just my not so humble opinion.
Four blade props? Nah, that's just one more blade edge to beat back into shape.....