Getting ready to take the plunge but kind of on the fence as to whether I should get the Standard or Ultra? Any Standard users with they would have gotten the Ultra instead? If so, why? Also, I would be running it with a Recto 2:100 and two G-Benz 2-12's. It seems a lot of people like to run it with a solid state poweramp. How will this poweramp pair with the Axe-Fx? Thanks!