I think 120 folders are a nice idea, I have seven or eight of various makes, mostly 6x9. And it's interesting exploring which have the best lenses and to go on the hunt. And they do make very sharp photos (the best ones). But ultimately they aren't cameras I'd use everyday, most need a rangefinder in the cold-shoe, not a big deal but focusing becomes a three stage job, rangefinder, set the lens, compose. Then when you compose it's a tiny image usually with fuzzy edges. Or just guesstimate focus distance, but you want it for the excellent lens and then just guess the focus, doesn't make sense. And the there is wear and tear, floppy front standards, old creaky cracked bellows (these can usually be replaced), some cameras even smell funny. I think I've done some of my very best photos with a folding camera mounted on a tripod to get every micron of quality from it. But I still end up carrying as much gear around as normal because I don't trust it and feel happier with a backup, in which case I may as well just carry a bomb proof Fuji MF rangefinder instead. They are addictive, but in many ways like a vintage car collection, there is always something that needs to be fixed.