I recently bought an ME Super at a roadside rummage sale. Cost me $20.00.
A little spiffing up and it's as good as new. I bought it as a spare camera but I find myself using it more than my regular camera.
It's got just enough automatic features to be useful when you want to work fast but it's not so automatic as to be difficult to use manually when you want. The lens on mine is ƒ-1.7. Viewfinder is bright. Controls are easy to operate. All my other Pentax lenses are interchangeable.