Am I crazy? Considering selling my RX100 and getting a Canon G15 or Panasonic LX7.

I have a RX100 (had an S90) and and it's large sensor gives it advantages in IQ and low light performance over the other two cameras you are considering. It's pocketable and that is also important to me. The built in pano is very useful too.

I am pretty demanding on IQ and I don't notice the edge softness others refer to. I have printed 24" and see no real problems at the corners.

For me, I see no advantage to switching.  I am very pleased with my RX100.

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Don