Indeed, the RX100 is really good, to a point. I guess I'm wrestling with dumping around £3,000 of Nikon gear to probably end up with £4,000 or so of Sony compatible gear, so just want to make sure that I'm actually moving to something that really does what I want it to do as opposed to the next bright new thing that ultimately disappoints after a few months of use.
I have a nagging feeling that, given the rate of progress, there's an A7 IV not a million miles away, and perhaps a more mature lens lineup by then to accompany it. I think I might sell all the Nikon gear after my next trip away in April. That will at least focus the mind!