Here are a couple. I have a bunch that I don't use much, or at all, any more. I haven't shot much medium format (120 roll film) recently, as the local custom lab that used to do first-rate E-6 processing went out of business and I'd have to send it to Chicago.
Mamiya 7 - 6x7cm - the only lens I can afford is the 65mm that came with it, which is just about right for most urban photography. I bought the camera used:
Cleveland Center Street Swing Bridge, Detroit-Superior High-Level Viaduct in background. Shot 2003 w/Mamiya 7 on Fuji Provia 100F film:
Rolleiflexes, both strictly manual with no built-in metering or gadgets. The one on the left is a f/3.5 built in 1951, that my aunt gave me. It was the first pro-quality camera that I used, when she loaned it to me in 1962 when I was at Indiana University.
The one on the right is a f/2.8 built in 1955 that I bought lightly-used in 1967 for $270. It's one of the few utilitarian things I can think of that has increased in value.
Cleveland Terminal Tower entrance, 1978, shot with Rolleiflex f/3.5, probably on Kodacolor 100 film:
My favorite medium-format color transparency film is Fuji Provia 100F. Fine grain, strong but not-excessive contrast, saturated colors, and sharp as a tack. It scans beautifully. For color negative film, it's Fuji Reala 100. Excellent dynamic range, pleasing colors, fine grain, scans just as beautifully.