Sony poured a lot of very cool features into the RX100, and once you get used to them, you'll see what a powerful camera it is; the flip side is that even with lots of experience using Sony ...
A top option is the Sony RX100 III, which has a one-inch, 20.1-megapixel Exmor R CMOS sensor, which is a fair bit larger than what you find on most other compact cameras in this price range.