Don -
As the owner of the M1, I agree with all of the points. It does spray well, but no better than my Badger 200G, or the old plain Jane 200 for that matter.
I do believe my Paasche VJR with fine nozzle will out perform it for extremely fine line work, and all of the mentioned AB's sell for much less than the M1. The novelty and beautiful finish aside, better value for the same performance is available, made right here in America, (or at least I hope they still are.) Bummer if they're not. (:>)
Good review, all issues are well stated. Thanks.
Patrick