Originally posted by podboy3
Part of me is also thinking to upgrade to a K-5 IIs for some of the advantages I believe it has over the K-3
Well, I did upgrade to the K-5 IIs after the K-3 came, which I bought new during a 1/2 of original price closeout sale. I found it to have potential for greater fine detail in images over the output from the original K-5, no doubt due to the lack of AA filter, as well as better AF with some lenses. I passed over the K-3 series, as in some respects the K-5 IIs was still a bit better, especially in higher ISO performance. From what I saw, the improvements of any of the K-3 models were not enough to warrant my abandoning my K-5 IIs. Then finally came the K-3 III. Of course, its low light/high ISO performance is in a different league. However, I had already bought 2 silver KP bodies a couple of years before, along with a silver DA 20-40mm Ltd lens, as well as some other lenses. I fell in love with the KP! It has a couple of compromises with dual-use buttons where my K-5 IIs has dedicated controls, but in many other respects the KP is the best-performing camera I had owned, and it is the most unique for the age-old Pentax concept of exceptional high quality with compact design. It remans the perfect counterpart for the Limited lens concept, and it is the perfect counter-design for a DSLR against the high-end APS-C mirrorless crowd. Its AF was noticeably improved, and its low light/higher ISO performance is exceptional as well! Absolutely great imaging.
So for me, this left the main advantage of the quite expensive K-3 III to be in the realm of even faster AF and far better burst performance for action shooting. But this is not of particular interest for me. So, I decided to finally get into FF, taking advantage of some terrific deals from B&H and bought a K-1 II prepackaged with the very fine DFA 28-105mm DC WR instead! Since I already had some great FF lenses from my days of 35mm film shooting, this was something I'd had in mind for quite some time. The K-1 II system along with the KP for my primary APS-C use, has been an amazing combo!
All that said, I still do like my K-5 IIs for its excellent on-body controls layout, its still fine imaging, and using it with my power zoom lenses in APS-C format, as my KP does not include this feature.