I recommend the Canon G11. Or maybe there's a G12 now, I don't know. You get very good optics and RAW file capability in a reasonable compact package that can be easily carried hither and yon. Not interchangeable lenses, but a decent zoom lens. I get a lot of use out of mine.
Actually, they're on the G16 now, I believe. Great versatile small camera, but not much to offer over the RX100. Very slow, certainly not one to capture the scene described by the OP - that's an SLR job.