Depends on how you feel about meters, I'd say if you're not bothered about having a meter, a M2, M3 or M4(-P) can be a perfect camera. If you want a meter, along with nicer, brighter viewfinders, and easier film loading, get a Bessa or a Zeiss Ikon.

Contax G2 is a beautiful camera, but it does not have range finder style focusing.

If you're also considering medium format rangefinders, the GF670 is stunning.