I had the K5 for a month, but got serious problems with jaggies, a replacement body didn't solve the problem, and getting online other people had the issue as well. The autofocus wasn't as good as the D7000 either, I could have lived with that, but not the image problems.
I wanted the K5 to do the job as there are great lenses available at a cheaper price, but it had issues, and the extra card slot in the D7000 was also a great bonus personally for my work.
Other than that the K5 was a really great camera.
Another good review of the Pentax here:
http://www.digitalphotographywriter....-canon-7d.html