If you don' define criterias for choice, comparison is a false question.
My criterias : ergonomic, very light,
For little hands : K5 is better
Because of fantastic pancakes (limited pentax and samsung) : K5 ; a true reflex looking like a bridge (very comfortable when walking in streets)
For AF : 7000 is VERY superior for finding the good focus when you have have different objects or people in the field. Anyway, with fast lens the K5 has never missed the focus.
Ergonomic : because of my little hands : K5
Definition : the same K5 or 7000 (DXO report)
Going outside (sports and animals) : K5 because of the WR quality
IQ : 7000 and K5 : the two have superior image quality. Some prefer the argentic sensation of K5 (So do I)
For optics : a false debate (if you are not professional). I own 6 lenses
: DA 12-24 (very good - samsung is cheaper and is the same), DA*50-105 (excellent), DA 40 and 70 ltd (excellent), DA 35 (because I bought with the apparel, but it is the true Wonder plastic). The very good 100 macro WR. I think i will take de 55-300 waiting for DA 300. Ah an old 80-200 very sharp.
So Nikon has a fantastic choice, but so pentax (because of the great compatibility). Anyway, I need only 3 to 6 lenses. So, in all the brands you can get fantastic lenses
.
So Ive bought the K5 and it is always the same pleasure
to use it because of ergonomic, IQ, and superb lenses.