In reply to PPP:
So are you thinking of staying with micro four thirds are looking more widely?
I own the basic rx100 and it is fab. The newer version with an EVF also has appeal. But no weather sealing and a fairly limted zoo range (although not much worse than you currently have). IQ for me is good enough. Large high iso prints are out but other than that you would need specialist requirements for the it to be an issue
If you are willing to carry more then the Fuji range are gorgeous and also offer some sealed leases and bodies
But most obliviously look at the Panasonic GX85 which the nearest equivalent