Originally posted by GregX999 Hey guys, thanks for all the replies. Too many to answer individually, but...
I have a P&S now. I've used a friends Rebel XT (or maybe XTi, can't remember now) a few years ago, and I still have an old Minolta 35mm SLR that I used to use many years ago. No, I have no Nikon or Pentax lenses. Oh yeah, and the camera on my iPhone.
I mostly shoot travel photos (indoor and outdoor portraits - of people and of "things" such as statues, food, street scenes, etc. as well as some landscapes), nature, and fine-art style photos, but I've also tried some sports (Rugby) shooting (yeah, with the P&S - needless to say that didn't quite work out), and some "action" photos involving mountain bikes and motorcycles. \\\)
Both of these cameras would exceed your requirements for quite a time I would imagine. I would certainly consider a slightly older body and nicer lenses, if buying either of these cameras meant you had no money for good lenses. The glass will be the major factor in IQ (apart from you of course).
On the other hand, many people recommend using cheap lenses until you can decide what your requirements are glass-wise. Which is also a fair way to look at it. Good glass is big money, and often new-to-DSLR users won't need the f/2.8 or f/1.4 or HSM or SDM advantages until they learn for a bit.
The K-7 and D300S are some of best APS-C cameras available, so they might be quite a big step up. If you get a K20D or K10D, you can invest in good lenses and upgrade bodies later. Unless you really
need the advantages of the K-7/D300S now and know how to make the most of them.