Originally Posted by Fred
Both the KM and KX (as well as the rest of the Pentax K-series) are great cameras. I would go for the KX over the KM because of the more responsive metering cells (silicon vs. Cds) plus having both the aperture/shutter speed visible in the viewfinder. The KM I believe is based on the Spotmatic that has been updated to accept the K-mount lenses. Never owned any of these (or any K camera) but have great admiration for them.