It's the underdog brand lately but I've been very happy with my Pentax gear going back to the ME Super that was given to me when I was in high school in the 80's.
Currently I'm using a K-3 for most of my photos with a K-5 for a backup/second. I also have a 645 (not D or Z) that I take out from time to time for a landscape or portrait (currently loaded with Velvia 50). I'd love a Z (or even a D) but it's not in the budget at the moment.
I think for a landscape/adventure shooter the K-3 is a great camera, despite some people's disdain for APS-C sized sensors. It's rugged, weather sealed, relatively small, and there are some fine lenses available, some of which are very compact. I take it backpacking, mountain biking, backcountry skiing, peak bagging, and even just around town. For me it's the right compromise between bulk and image quality with a lot of great features for true photographers. The ergonomics work well for me too (I'm medium sized).
I'm watching the upcoming 35mm body with interest as well, and hope it doesn't end up being too expensive or big/heavy.
Anyone else enjoying their K mount gear? Just curious as I haven't seen much discussed here.