A while ago I did little pieces on 2 cameras that you can have for cheap, but are also very good, I'll link them up here cause I don't think they're linked anywhere else.
Olypmus Pen D3 (half frame)
Super Fujica-6 (6x6)
Today, the Moskva-5. These guys shoot 6x9, have a rangefinder and a pretty good lens too. The viewfinder and rangefinder are seperate windows so it's not a street shooter unless you're focus bracketing, and there's no automatic film stop on advance so you're using the red windows. But, if you can live with those 2 things, then consider one.
They have a couple of quirks, they can also shoot 6x6 but only if you have the mask for it and the viewfinder is on the right side of the camera while the shutter release is on the left, so that takes some getting used to but is really nice for a left eye shooter like me. It also folds up really small and is quite light so there's no issue taking it for walks, or bike rides, around the city as I have been.
