Another welcome to PF
Originally posted by wldrnss Not too many recommendations for the K70. I was looking at it for the IR remote possibility and the articulating screen. The KP screen will fill that desire to a large degree
I suspect that you didn't get a lot of recommendations for the K-70 because you have a flagship model now and stressed how rugged it was. The entry to mid level models like the K-30 (I had two of them), K-50, K-S2 and K-70 are pretty tough, but not as rugged as the flagship models (K-5 and K-3 series). The KP doesn't fit neatly into either group, but it has a solid metal chassis like the flagship ones and should be quite durable. The K-70 doesn't have a shutter life rating, the KP is 100,000 and the K-3/K-3ii are 200,000.
I've got a K-3, KP and K-S2 (which is similar to the K-70). I like each of them in its own way. I love the feel of the K-3; it's just perfect for me. The AE metering and AF are very good, its burst rate is excellent. But for image quality, the KP is better - particularly at high ISOs. Personally I don't love the ergonomics of the KP - even the large handgrip is too small and the layout of buttons and dials is a bit cluttered. The third dial is handy though. The tilt screen is very good. The K-S2 is relatively light and compact and the flippy screen is more versatile than the tilt screen on the KP. Its metering and AF (which are similar to the K-70) are well behind the K-3 or KP, but adequate for most purposes.
If I could only keep one camera, it would be the KP, despite its ergonomics and the lack of IR remote. It's rugged enough and compact enough and its IQ is the best of the three. Battery life is OK; just carry a spare. The KP has been selling in this country for barely more than the K-70 lately. At that price there is no contest.