I've had my K10D for about 6 months now, and have very little but praise for it. My misgivings about the li-ion battery seem totally unfounded. I think it performs better than the manual would lead us to believe, and unlike rechargeable AA batteries, it holds its charge! I keep two batteries: one the Pentax battery that came with the camera, and the other a cheaper Haehnel battery. I rotate them, and when I first got the camera, I charged both up before going anywhere. Recently I decided to see just how much use I could get out of a battery, and got about 400 shots, the majority of which were night shots and included some bulb exposures and quite a few in the 15-30 second range. The battery finally gave up the ghost last night while I was out on a night shoot! Another plus point for the K10D: it's possible to extract a battery and insert a charged one without removing the camera from the tripod. Try doing that with AA rechargeables in an *ist DS! I'm also impressed by the shake reduction function. I pushed that to the limit this evening inside of a church, and while the results weren't as good as could be achieved with the use of a tripod, I thought that getting anything useable when shooting handheld at 1/6 second was impressive. Here's the best one, taken using Focal length: 108mm, Aperture: f5.6; Shutter: 1/6 second; ISO 800: My one comment about the shake reduction function is that I'd recommend making sure you turn it off when putting the camera on a tripod. (I think Pentax also recommend this, and I'd agree with them!) Some of my recent Christmas decoration shots do not compare favourably with what the *ist DS produced last year. I wasn't using mirror lock-up and suspect that SR got in on the act and badly corrected some shutter slap when really I would rather it hadn't. As I'm the sort of photographer who enjoys low light work, I will probably get more use out of my K10D in the next 3 months than I did during the summer, and I've probably still got some learning to do, as I acquired the camera during summer and it's only in the past six weeks or so that I've really taken it out at night. If I've got one niggle about the K10D, it's the way in which it handles green. I seem to have had a lot of burnt-out grass from it. In fact, I switched to RAW+JPEG capture so that I'd have the RAW to work from if it got the grass wrong. I have an idea that CCD sensors have more green photosites on them than anything else, and I do wonder whether the K10D is paying too much attention to the green photosites.