Remote Toilet ideas?

[Fentonite]

I've got a little cabin on a mining claim (emphasis on "little" - think tuffshed with a deck). I've gotten it livable, and I enjoy spending time there. It's a bit over 9000' elevation, no running water, no power, but has a potbelly stove and a nice view. It's time to put in a crapper.

I figure I'll build a small outbuilding. Again, no power or water. Does anyone here have experience with composting or solar toilets? Plenty of southern exposure/sun. There are a couple commercial waterless composting toilets out there, but I'd sure like to hear some ideas or experience before I spend $ on that sort of thing. Definitely want something a bit more civilized than sitting on the sleeve from an MRE carton - done enough of that.

Ideas?