My opinion is that Pentax models punch above their class. Even with the AF achilles heel, people buy into Pentax because of the well rounded photographic tools. Ok, having 100 colors to choose from also helped
.
Many times when I had the K-r I considered switching, but every time I compare features (of the same price range), I end up back where I started.
In-body SR
VF size (even the pentamirror models are larger and brighter)
Ergonomics
Perceived better build quality (has anyone drop tested Pentax DSLR's yet
)
AA battery
The all powerful, omnipresent, unequalled, yet lesser known GREEN button