That's great to hear, PRJ. I'm a little jealous; I had hoped I'd have a Hexar RF I'd been beating up for a long time at this point, too. After mine was revealed to have a bum winder, I maybe I should have prioritized finding a good one instead of being put off. I had used one before that belonged to a photographer I worked for, and it was a great, reliable camera; that's why I bought it in the first place. For someone looking for an M-mount high film volume workhorse, it certainly seemed like it couldn't be beat.
But in the end (and especially nowadays) I'm pretty slow and picky about what I commit to film, so the M3's are more than sufficient for me. When I need a high volume workhorse camera, I'm shooting digital these days - and if I could do that with an M10 I probably would, but A) not for everything, and B) that's another thread. To return the matter at hand...
The durability issue of the Ikon ZM is well noted, too - especially coming from Leica cameras. It's part of what stops me from buying one. But I guess I've more than sufficiently answered the thread for myself; to Robert, maybe this is the long way round saying it sounds like you should try an M7 - or maybe find a Hexar RF...