Rotorway blades can be an intense topic. Beware of early Rotorway D spar blades that are assembled with carpet glue. The later D spar blades with the blue glue are supposed to be OK. Check early C spar blades for the rivet modification. Look inside for the double row of rivets attaching the skins to the spar.
I wish I could comment on aftermarket blades but I just can't find anyone with actual experience with any of them.