Isonic 111 or 122

[davide]

This seems to be a recurrent question but here we go again:

I am 70-72Kg and I have two Carbon Art slalom boards for high winds and looking for a bigger board to use with my biggest sail (7.3) in lighter air. The board has to be able to float me AND take me back in sub-planing conditions (which can happen, with the 7.3).

Question is: Isonic 111 or 122? Or to put it better: how hard to sail is the 122 for a 72Kg expert but very-far-from-pro sailor?

I am used to relatively big boards, I currently have a ML about 75cm wide for similar purposes (it takes 6.0 to 9.0).