The processing power is impressive and I am sure this will result in even better tones at some point, also the channels feature sounds awesome. The change to a 3U device is something I don't really like, after all for many people this will mean having to go for a new rack as well, and from how I understand it this change came because of the new display, which is something that I honestly don't really care about. I prefer to do my editing on Axe Edit and once I am happy with my patches I don't do much editing on tour, so the new display is not really adding that much for me. The MFC not being supportet with FAS Link is actually a bummer in my opinion. Yes, I know that I could still hook it up using a regular midi cable, but seriously, this is not comparable to using the FAS Link (specially not on tour), and on top of that the Axe FX III doesn't even support phantom power in case people want to use their old MFCs (or any other floorboards) with midi. Anyway, from how I understand it right now it will not sound much different than my 2 XLs, and since I did a couple of world tours with those 2 units and 2 MFCs without any problems and so far I can achieve any sound that I want to achieve, I am not in any hurry to upgrade. I am sure that might change at some point, specially since I am sure that the Axe FX III will be able to do things the XL can't do at some point (yeah, I know, I could use 5 delays per patch with it, but that's nothing I need, one delay is fine for me ;-) ) and there will be sound improvements that older units won't be able to get, but until then I am fine with both of my XLs. Buying 2 new Axe FX III units, 2 new racks and 2 new FC floorboards is not on my agenda right now