Originally posted by Arjay Bee RX100 series Sony - small, light, versatile 1"sensor
I own the RX100, the MK 1, and I also own a Ricoh WG-2 and an original Q. The RX100 really is a giant-killer, in terms of image quality and control. I adore mine, and the raw shooting, the 7-blade aperture, the sharp, 1.8 lens...but I wouldn't take it running. Especially if I am planning on letting it get wet, or get dropped.
My original Q is bulkier than the WG, and not weather sealed, and I think actually both the WG and RX100 take better photos. My Q may have some sort of issue, but the images I get out of it are awful soft.
The WG-2 would be the better camera, choosing from what I already own. No RAW, no depth of field control, but decent photos? You know it. The WG-2 is also better for Macro craziness.
I wouldn't get a GoPro for stills. They are very much made for video, and they are not as rugged outside their case as the WG-2 is natively. They also don't have a color LCD screen for composing, and they all have fixed-focal-length Fisheye lenses. Blech
My suggestion is WG-series all the way. I have personal experience with the WG-2. If the successor cameras are at least as good, I would definitely go for it. The Pentax/RIcoh WG cameras are probably the best on the market. Olympus has some good stuff going on with their Stylus Tough series, but I'd have to shoot them side by side.