14 months down the road... an update.
seems like a better question would be what's your least favorite Pentax film body... as all of them have at least some redeeming value...
In all formats, I have to like my 1938 Bessa 66 with the uncoated Skopar best. This could be supplanted by a '33 Rollfilmkamera if I manage to sort out some lens issues... these are
real cameras, where the operator has to pay attention to everything, and where the engineering is sublime.
My love for the cameras from a year ago has cooled a bit - the Certo's lens isn't fantastic, the ST605 is still a good one, but I can't see the meter needle well when stopped down.
The Spotmatics continue as favorites - the design and engineering are exellent. ES-II has some cool features, and the Program Plus has its points as well. I wouldn't want to not own any of these.
But, in the end, currently I'd have to put myself in the KX camp as well. There's just so much right about this camera, the metering feedback is so well designed, and the viewfinder though not the largest or brightest just snaps into focus.