Originally posted by barondla Is the K-1 body as big
With K1, I don't feel the need for a grip. K1 has a solid grip and feel without the additional bulk and weight of the grip. Battery life is pretty good on K1 so the added battery in the grip is not a selling point for me either.
As far as KP vs. K1, I would get both if I could afford it. If you had to get one, start with KP first. You can always add the K1 later. Pentax has more choices for APSc lenses giving more flexibility to KP. I loved my K3 when I had it. The image quality is fantastic but high ISO beyond 1600 was not so good. Pentax solved that problem with KP. I would not hesitate shooting with KP at ISO 6400 all day. If I did not have my K1 and was starting over with Pentax, I would probably start with KP and then build from there.