Olympus XZ-2, Panasonic Lumix DMC-LX7 or Sony RX100?

"Much as we like the Panasonic LX7, the longer lens, excellent JPEGs and engaging user interface make the XZ-2 stand out for us. The XZ-2 is one of the nicest cameras in this group to use, featuring extensive customization inherited from Olympus's PEN-series interchangeable lens cameras. This is a serious enthusiast camera and easily one of the best of its type that we've encountered. Really the Olympus's strongest competition comes from the Sony RX100 - which at least matches it for image quality but doesn't quite offer the sense of engagement that we appreciate in the XZ-2's operational ergonomics."

I would like a RX100-sensor with XZ-2 ergonomics

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I'm not sure how to compare the LX7 in relation to the XZ-2 ...