I just wonder why you don't go out and buy the Axe III Fx?
Because in 80% of my playing I use simple chains that I love. U2 is only a small part of what I do and I find my Kempers' overall tone and ease of use much better. Yes, Kemper can also handle my U2 stuff but sometimes it is limited and you have to find compromises for some songs and their patch live organising and that is where more power and more complex chain possibilities would come in handy. This is not enough to get an Axe FX and not enough to not wish for a Kemper II.