What are the preferred propellers for the 175 (and now 185)? It seems that APC is still the preferred propeller, however based on a conversation I had with Mike Harrison at the Nats this year, the big drawback on the APC is weight. Are there any Falcon or Mejzlik propellers that will provide enough performance without the weight penalty? I'd love to see a four-bladed prop appropriately sized for the larger YSs (bonus points if it's carbon fiber) as I always preferred the feeling of the airplane with a four-blade prop, over several designs and from the 140 to the 170.