I recently played with few compacts (but NOT RX100), so here are my experiences:
- Canon G15 decent picture, great build, a bit chunky, slow to autofocus, slow frame to frame (returned it)
- Panasonic LX7, decent picture, great lens, decent enough autodocus, awful sensor in low light, at least one stop of noise worse than G15, so not a great indoor camera (sold)
- Fuji X10 - decent picture, decent build, decent autofocus, menus a bit complicated, touch chunky. I returned it, not sure why anymore. I think I decided that small sensor just doesn't do it for me, and I ended up with Sony NEX F3 and couple sigma prime lenses as my travel system. Not sure that was right decision. Out of all small sensor camera's the only one I didn't hate was Fuji...