Hi Connie,
Absolutely LOVE IT! First thing I did was go to eBay and purchased some nice glass that is about 10-15 years old. I got a 50mm, 25mm and a fish-eye. They work perfectly with the k10D! IF they were originally auto exposure or auto focus it will take if not manual mode works too. The camera is so easy to use, the programming was really thought out which is more than I can say for the Canon and Nikon. Its very user friendly. I usually have it set high quality JPEG, but if I want the next picture to be RAW, its just a button near the thumb. On a Nikon, you need to go into the programming - what?? Not thought out.
The pictures are sharp and the colors are brilliant.
Nikon makes amazing cameras and glass, but in order to get the standard that Pentax has at K10D, you need to spend MUCH more with Nikon. I compare most of the features with k10D with the Nikon D200 ($1000 more).
Also the feeling of the K10D is much nicer and feels better built. The Nikons under D200 all feel like cheap plastic. Also the Pentax is weather sealed which is a god send in the rain. The Nikon doesn't have that until the d200 +.
Either way you go - I'm sure you will be happy, but for the money - you get many much more BANG for the buck with Pentax K10D.
Hope this helps,
Erick