Whirlwind just came out with a c/s 3 bladed prop that weighs 36 lbs. It' spendy at $12,500 compared to an aluminum Hartzell 2 blade, but weight is a consideration for me because I'm putting an IO390 up front, so thats probably what I'm going with.
I talked to a couple of guys who have the legacy 2 blade whirlwind and like it really well.
I'm looking at the lower end of the cost range at the Sensenich ground adjustable. It looks like a nice prop. It's still more expensive than the 2 blade fixed pitch or GA props but VAF reviews have been good. I was wondering why Vans didn't sell the 3 blade Sensenich. I'm not ready to spend the $$ for a constant speed prop yet.