Originally posted by LeDave Thanks guys, I am going for the K-3.
I faced the same choice recently and the price delta pushed me to the K-3. I upgraded from my K-50. Honestly it's put me in an odd situation. The K-50 jpgs would process fairly well on my Chromebook but the K-3 image size is so much larger that the system was having problems even displaying large directories of these files. I resolved the problem by increasing the swap space but it's a band-aid. I think I have to suck it up and get a traditional laptop to process the photos or at least a desktop. Sigh. I love my 8+ hour battery life and instant on Chromebook... and I have made it a quest to force myself to live inside that system for photography for a while. I can even process raw files when desired (Polarr is one of the tools there).
In any case you will not regret this choice.