Ok, all, great info... Let me share a bit more after some digging.
 
 
Ok, on to the MT topic.  I just got off the phone with MT.  Here's the scoop.  There is *NO* new airfoil on the blades, they have been a scimitar design from the beginning (whenever that was).  The *DID* however come out with a counterweighted prop last year, but it's the same blade design, with the counterweights added at the bladeholder.
 

 
So, to really put all of this in perspective, we'd need a Legacy that has flown with the Hartzell at a known configuration, and with the MT in the same configuration.  I'm not sure we're going to make that happen, so I guess we are back to ground zero.