If you want auto shutter speed than I'd have to say the Minolta XA. Small and easy to use, just set the aperture and go. My choice for fully manual may be controversial but I like my FED-2. Affordable and once you get it aligned right a sturdy camera. Put a collapsible Industar lens and you are set for street photography at a low price.

Just my $0.02 worth. Your results may vary.