Thanks for the replies thus far.
I never print square at this point, and I don't know that I'm willing to go to a square print... it could be interesting, but I don't know if I'm willing to sink money into something that I may or may not like.
I'll probably end up going with the 645, though what I've been told is that there's only a negligible difference in image quality from 645 to 35mm... which I can't possibly believe, with the 645 negative being twice the size of the 35mm. Any thoughts on that one?
I have found some decent deals on ETRS systems, but I guess the main advantage of the ETR-Si is mirror lockup, which I understand comes in quite handy. But really, if I find a deal I can't pass up on an ETRS outfit, I'm totally going for it. Also, the aforementioned availability of lenses, grips, backs, etc... will probably be more cost effective in the long run. For instance, on keh.com, SQ-A backs are going for about $89 at the cheapest, and ETR-Si backs are going for $56 at the cheapest. That's just the backs, most everything else for SQ series cameras is that much more expensive as well.
True, Bronica is out of business (unfortunately, though the equipment wouldn't be this cheap otherwise.
), but the equipment I use now is 25-30 years old at this point... and I
can go through Canon for repairs, but they'd charge me an arm and a leg. There are a few reputable camera repair shops and services in this area that would probably suit my needs quite well.
Thanks for the welcome!