712U VS AP1

I play AP2 irons (P - 4) and was thinking about adding a 712U 3 iron.  Then as I started to look at the specs, I was wondering what the difference would be between the 712U and an AP1 3 iron.  

Any thoughts?

Greg - I can't speak to the differences between the 712u and AP1 but I can tell you that I love the 712u 3 iron!.  I also play the AP2 (4-W) and the 712u fit perfectly between my 4 iron and 913F 17degree.  I'm just getting to to where I can work it high/low and draw/fade but the club is awesome!  Two of my regular playing partners have hit it and they are on board to get one as well.

Sorry I can't help with the comparison but I hope this helps-