Cameras with more dynamic range allow you to take photos with dramatic differences in highlight and shadow areas while retaining detail in both.
Think of a brilliant sunset on a rocky beach: Bright sunset in the background, with dark rocks in the foreground. High dynamic range means more of the extremes will be faithfully reproduced.
Dynamic range test data courtesy of DxO Mark.RX10 II test data on DxO Mark NX11 test data on DxO Mark
Excellent build quality; Superb viewfinder; Excellent image and video quality for its class; Bright and versatile zoom lens; Very fast autofocus; Great burst performance and depth; Incredible slow-motion capabilities; Really intuitive Wi-Fi image transfer; Good battery life.
Expensive compared to its nearest competitors; Less zoom reach than rivals; Soft in corners wide-open; Slow buffer clearing; Small rear control dial has poor tactile feedback; Long delay to render each high frame-rate movie; No tilt/swivel or touch on the LCD panel.