Originally posted by JinDesu "First, why was I, along with many others, disappointed?"
I think the above is a fallacious statement. A lot of k-r and k-x users currently (and some k-20D, etc) consider the k-5 II to be a great answer from Pentax. Especially since one of the big questions asked in the last two years was "Pentax, are you guys ever going to fix the k-5's low-light focusing issue?"
My thought on the k-5 II? Yes please. Especially the IIs.
I've said before and I'll say again, that the biggest issue that Pentax faces is the way that expectations ramp up prior to announcements. Whether it is full frame speculation, auto focus improvements, video improvements, articulating screen, people thought Pentax would deliver more than what they did.
Still, I do think that the K5 IIs is probably the best APS-C SLR camera out there, particularly considering that neither Nikon or Canon upgraded their upper end APS-C cameras (and the 7D in particular is getting pretty long in the tooth).
Honestly, I think probably there is as much benefit taking the AA filter off of the 16 megapixel sensor as there would be going with the 24 megapixel sensor.