I'm considering this camera as an Aperture-Priority AE camera for my M42 lenses. How is build quality compared to Pentax Spotmatic F, Yashica TL Electro X and Fujica ST605N? (My main usable M42 cameras, none of which has an AE mode). It comes with an 1.7/55 MC Auto Chinon lens which i haven't used in the past. How does it compare with the SMC Takumar / Yashinon DS-M or the Fujinon (not EBC) of same focal length / max aperture? What's the difference from the CE or CEII earlier models? I also looked at the Fujica AZ-1 and the Yashica Electro AX, but i get mixed vibes for these cameras (although few actual users' opinions) Thanks!