I'm also another one of the 151 beta testers. I've had a LOT of fun testing these out, and actually learned a lot in the process, as far as qualities I like in a stick go.
I'm generally a Pro-Mark 747 Rock hickory guy, but I may switch to the Select Balance 5As until they make separate forward and rebound (check the videos, it'll make sense) balance versions of the 747!
I made 5 videos chronicling the whole testing process, and they're all here in this YouTube playlist: #project151 missions
Way to go D'Addario, with both the Evans Level 360 redesign and the Promark Select Balance line!