interesting, I as well searched, how about that? and no, what you posted didn't answer my questions, thanks anyway

and the reason I asked here is cause the only useful info I found to come close to answering my questions was this excert from a msg Allen sent to someone
In reply to:

At recent meetings, we decided there were enough small changes to enough models to use new nomenclature, hence the v2 designation. Finally, there are no audible differences in the M22ti and the M22v2.




so no real difference in the m22's, what about all the others? still the same question as I made in my last post + any audible difference?