Originally posted by JohnX The K3II is in the same customer segment as your K5, i.e. top APS-C. The KP isn't.
K3 was past formula, I just don't know why many people don't want to admit this, KP is much better on auto focusing, high ISO image quality, and 5-axis' shake reduction performance, you can find the comparing on youtube, by the way, pixel shift is also a function that K3 II doesn't have.
what K3 better than KP is inner GPS, 2 card slots and rapidly continuous shooting(just one more per second) , that's all, get no business with IQ.
however for a camera, the most important thing is IQ I think (*'ω'*)