In reply to Tricadam:
I've used an RX100 mk1 for a few years now. I'm on my second one after the first one jammed up due to grit in the lens. My current one is around six months old. For the price I still couldn't find anything that looked better. There's obviously better options if you're prepared to pay for it, although the mk2 or 3 didn't have any major features that I thought were worth the extra investment. I couldn't justify spending any more since winter climbing evidently seems to shorten the camera's life to some extent.
I like the compact size that easily fits in my top pocket. It handles ok with gloves on for me, holding/shooting with one hand. Sometimes I rotate the shooting function dial by accident with gloves but it's obvious when I've done this.
I find the camera significantly under-exposes in winter climbing settings but I find I can easily/suitably correct this during RAW editing, and/or by increasing the camera around 1 stop to begin with. Be prepared for some mandatory editing in this respect though.