So I have a set of the 1st gen AP2s with Nippon 750GH shafts that I've been playing since 2009. I wanted to meet a specific set of performance metrics before I even debated looking at new irons, which I happened to meet this summer. I love the look and performance of my current set, and would more than likely stay in the AP2 family unless the T-MBs offered better numbers. Given that I am a lower-spin player, that seems unlikely though. Does anyone here have any experience with the AP2 family that could let me know what improvements would be gained, if any, in the new model?