I picked up a K2 body on eBay for a mere $25 and bought a simple SMC Pentax-M 28-50mm zoom to mount on it to give it a little road test. The camera is in great shape, aside from a little missing paint on the sides, and seems to work perfectly. Have any of you ever used one of these and if so, what do you think of the camera? I know the ISO ring can be a source of irritation from what I've read and have experienced a little so far, but otherwise it seems like a nice, solid camera. I've had a few KX models before but the K2 seems a bit more full-featured. I would love to hear thoughts on this camera.