Mamiya 7 II is your best bet, get the II as the original 7 has a spot meter, the 7 II has a scenic average meter and is fairly accurate.
I have a 7 II, 150mm, 65mm and 43mm love them all but make sure you get the viewfinder with the 43mm... It's a difficult frame without it.
The Noteworthy Ones - Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1 / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic
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