I have to disagree with those who are saying that some of the earliest Pentax DSLRs were bad cameras because they didn't have SR. I've got an *ist DL2, which is the most basic DSLR that Pentax ever made, and I love it. No SR mechanism means that it's amazingly light for a DSLR, and after all I got by fine without SR for three decades of shooting film.
And here's another heresy for you: when you're shooting with manual lenses, it can be easier to focus using a pentamirror camera than one with a pentaprism. Of course the pentamirror is slightly darker, but the viewfinder image "pops" into focus more obviously than it seems to with most pentaprisms. At least to my eyes.
I'd like to put in a good word for the K-S1 too. I use mine with a small prime for almost all my snaps of family and friends, plus the free work that I do for a charity, and it delivers excellent results. And as for the styling: it's the only DSLR I've ever used that has made random strangers ask me what camera I'm using, and almost always in a positive way. Women in particular seem to love it.
So if you need a big butch camera to feel like a man, you'll hate the K-S1. For those of us who don't feel any need to prove anything with the cameras we use, I can recommend it wholeheartedly.