I am in the market for a k-mount body. I have a selection of M42 lenses and hope to eventually be able to afford a Pentax LX. At the moment I am slowly trying to acquire some k-mount lenses, and would like a body to use them on. MX/E, K2/M/X, K1000 are a bit expensive and hard to come by. Are there any off brand K-mount camera models such as Ricoh/Revue/Chinon/Porst/etc... that is worth considering? All I need is some kind of control over the shutter speed and reliability.