RE: DLE 35RA going to 3 blade prop
I will never intentionally use a Biela of any number of blades. XOAR and Falcon are about the only woodies I'd consider. In fact the XOAR electric woodie modified as I do toturn these into wood carbon hybrids, work fairly well
OS single nut-bolt prop arrangement all but eliminates every other prop except APC. You want looks, use the scale prop. You want performance, use APC. Either way, it doesn't affect me in any way