You can always compare other models on DxOMark.com. As you can see from the above graph (click for a larger image), the Sony RX100 Mark IV's dynamic range is very similar to the Mark III's ...
the Sony RX100 Mark V carries US-market pricing of around US$1,000. That's the exact same pricepoint at which the RX100 IV launched. In Canada, pricing is in the region of CA$1,250, while in ...
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.