Wow guys! Thanks so much for your advice, this is amazing!
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What do you miss in the Canonet you have? Want a faster lens?
By "travel extensively", do you mean several months at a time? If so, the logistics can make shooting film pretty hard, as romantic as it may be. You don't only need to carry it around (which makes the size of your camera a non-issue in that regard), you also need to get it developed in reasonable time. The reliability of an old camera also becomes a more pressing issue when you're away from home for longer time and don't want to carry a backup...
By travelling extensively I mean I'm living as an expat and am about to move to another country with some travel in-between. I know labs in most places I'm planning to go to; if not I'll mail the film in. Had some experience getting film through security without having it x-ray'ed. Nothing is foolproof of course.
For QL25: It's a lovely camera with a great lens, but I'd like to have something faster than 2.8(5) - ideally 2.0 and faster. Also, it weighs and is shaped exactly like a brick. I would definitely choose to keep my Electro35 over it, even if it doesn't let me shoot manual.
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I've looked into Minolta 7sII, they seem to be very few on eBay and for a lot more than what I think they're really worth; I've also read some negative things about the viewfinders on them...
If the camera is auto I also much rather prefer aperture priority, though the other way around isn't a complete deterrent of course.
For Yashicas I figured that the one that would make the best sense is perhaps GL as it's fairly small, got 1.8 glass and 1600ISO limit which is really important because there's simply no way of shooting anything faster on those cameras unless it's always 500 or 30 shutter speed.
GX's are surely pretty though...
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I'm still considering Retinas, though IIIC is just too pricey for something that might not even be that useable. Which is important since it'll be the only camera that I'll have in my hand for the next eight months or so. Maaaybe IB would do (has larger finder) though it's 2.8, which I could consider seeing how compact and beautiful that camera is.
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I'm thinking folding 35mm cameras are starting to become a bit of an obsession for me. Looking at Vitessa L's right now...