So you are happy with 10MP

Not me. Oh no, 14.6MP all the way

Yvonne Bourque (author of the K10D ebook) shows an amazing comparison pic of a "blue mans" eye at ISO1600 taken at more or less the same time with a K10 and K20.

http://pentaxdslrs.blogspot.com/

I also came across a comparison shot I did for Pentax when testing the K20D and K10D back to back. I didnt resize to match, just to make the difference more plain...I have just superimposed both crops on the original image.

I am really not kidding when I say we are getting into FF territory here.

--
Steve
Pixel peepers miss the big picture.
http://www.pbase.com/steve_jacob