Both are terrible and I've experienced both to some extent in my life, but I would certainly choose to be wasted by hypothermia rather than a heat stroke any day. It's a whole lot less suffering compared to having your body over heating. In fact, you could probably make it quite comfortable before you lose consciousness by continuously adding more and more layers of clothing (if you have the chance). As for a heat stroke, there's only so many layers you can take off until you've got nothing on left and you're still having a difficult time maintaining homeostasis. But yeah, the more I think about it actually. hypothermia doesn't seem like the worst way to go by a long shot. Next to passing in my sleep, drowning, or being hit by a passing car so fast that you won't feel anything, I'd probably say that perishing via extreme cold would probably be at the top of my list in ways I wish to go.