Thanks to all these advises and corrections ! I would realy love having a K-5 IIs but can't so it will be the K-5 even if I don't get as sharp photos as with the IIs, about these AF improvements, I don't care, I hate AF, I'm an old-school user, used to 70's-80's SLR and rely more on my left eye and a good MF focusing screen than any modern top AF. Plus, never using AF greatly improves batteries autonomy. I would only use AF for action shots, sports, etc... but these are not my focused subjects. When and if I can get money from my artistic skills (not only photography, I'm also painting, drawing, etc...), I'll jump directly to a K-3, but no need to hurry
I'm yet very glad of what I can get out of my K200D and cheap old primes (cleaned, calibrated, 100% sharps, my 24mm, 50mm and 135mm, only the Cosina 24mm is KA, the others are K, and that's fine as long as I have top IQ). The upgrade to K-5 model is mainly for its huge ISO superiority / K200D and to be able to use 1/60 and faster in low light conditions.