The reasons not to buy an *ist D are pretty simple, IMO.
1. It's now a hair's breadth away from being a two year old camera.
2. The other D's are a fraction of the cost, with the caveat that they are
less than the *ist D in some ways, and have improvements in other ways.
3. If there's a new DSLR from Pentax around the corner, and one must have a
Pentax, it makes sense to wait and see.
4. The other two big names are pummeling the heck out of Pentax at the
moment, and there's no sign of it letting up.
That being said. The *ist D is nice in it's own right. I'm curious to see
how long Pentax or any DSLR manufacturer will service it's DSLR product. I
bet it's under 6 years. I bet that in the forseeable future, DSLR's will be
treated like scanners, computers, printers. Oh, it's defective? Here take
this returned, refurbished one, we might have had our staff look at.
Tom C.