My favorite mechanical 35mm camera, hands down, is the original Nikon F with the eye-level (non-metered) prism and a hand-held meter. There is nothing in the viewfinder except your image, and you see 100% of the view the lens sees. The F2 and FM2 have some improvements over the F, which may matter depending on your needs. They are also great cameras, but there's something classic and timeless about the F. Finding one with an eyelevel prism in good shape might be hard within the budget you stated but I am sure there are user bodies out there.
I'm with rthomas. There's nothing like looking through the viewfinder of a meterless prism and all you see is what the lens sees and no other distractions. Kinda makes the viewfinder look "clean"