I purchased my first AxeFX (Ultra) just prior to the release of firmware v11.0, and right before the announcement was made for the AxeFX II coming to market. Though my timing was a bit unfortunate in purchasing the Ultra I was very pleased with the units sound and performance. I remained pleased with it for 2 years, and decided to upgrade only after hearing some demo audio of firmware v5.0 in the AxeFX II.
I purchased an AxeFX II Mk I at firmware v5.0 (mid 2012) and, as had been the case with the Ultra, I would have been satisfied if no further updates were made available after I received my AxeFX II. I'm grateful for the free updates that have been released since my purchase 2012 and, regardless what future updates bring to the Axe8 and AxeFX XL/XL+ platforms, my AxeFX II will still sound as amazing as it does today - which is on par with most of the vintage, boutique, and production amps I've owned that are represented I therein, better in some cases, and far more consistent than all of them.
Should some new feature be added (noticeably improved modeling, noticeably improved effects algorithms for those effects of which I make regular use, significantly improved pitch tracking, etc.) I'll then purchase a XL+ to gain access to such improvement(s).
I'd like to extent a big thank you to Cliff and the FAS team for all of the free updates to the AxeFX II to this date. The AxeFX II has been the single best music gear purchase I have made in my 36+ years of playing guitar. I will, no doubt, upgrade again sometime down the road with a purchase directly through Fractal Audio Systems.
One request: If at all possible please include the previously mentioned new bass amps (Sunn Coluseum and Ampeg PortaFlex, and any others that may be part of a current effort) in this last firmware. Im a bass player as well as a guitar player and have been hoping to see more bass amps in the AxeFX. The PortaFlex is of particular interest to me (I can get close with the SV Bass model but it's not quite there).
Again, thank for the amazing tones!