Originally posted by rparmar I would be contrary here and say that if video is not so important, buy a used K100D Super. It is an excellent camera and if you can get it for a couple hundred, an incredible deal. Learn what you like and don't like while saving money on either of the current models. Then, when you know what you like and need, upgrade to the body that suits you.
In the meantime you'll have more money for glass, which is the real thing.
I think that Robin may have a very nice strategy here. Pay the least amount for a very competent camera, and either buy lenses and/or save money for the body upgrade.
The K100DS is a great camera, with a classic of a sensor (6MP Sony) that will give you very good performance, while allowing you to get a feel for what you need in your next body. It will also probably be inexpensive enough that you probably won't feel the need to sell it to finance your body upgrade, and you'll have a great small, light backup body.
Personally, I have some pretty specific performance requirements as mainly a birder, so my primary bodies for this are a K-7 and K20 (I carry two bodies and lenses most of the time), but the K100DS can certainly hold its own, especially IQ-wise. I usually opt for the speed and convenience of the newer models, but still pick up the K100DS for the smaller, lighter, less expensive body for any number of reasons. My K100DS is actually my newest body -- couldn't resist a brand new one @$200 during the Ritz store closings --
For a couple of hundred bucks -- hard to go wrong -- then either of the new bodies (presently the Kx or K-7, and who knows what the fall will bring. . .) will be a very significant upgrade in just about all parameters of performance and IQ. . . With a camera already in your hands, and some experience behind you, you'll be better equipped to make the decision of what is really important to you, and the style of shooting that you develop. . . plus you'll be more able to take your time and wait for the right deal. . .
Good luck in your choice. . .
Scott