I had Axe Ultra earlier, then I decided to upgrade ot Axe-FX II. I cancelled my Axe-FX order few months ago after waiting over six months, I simply got tired of waiting.
Two things happened. I heard about KPA and I got a note from G66 that my AxeII was ready for shipping. Obviously, for some reason, my earlier cancellation had no effect. Well, I decided to sell Ultra and take both AxeII and KPA in for comparison.
I spent two weeks with both devices, and both gave me very good results. However, with my single coil guitars (my main axes, Tele & Strat) there was no doubt - KPA was able to bring dynamics and clean/crunch sounds that I wanted - with minor tweaking and buzz.. I sold my AxeII and here I am now with my modeling gear, the only one - realer than real!