You asked
Should I upgrade from the sony rx100 ii?
Here is what the site says about that.
From Sony RX100 II: Sony RX100 II: A fixed-lens compact by Sony with a 20.2-megapixel 1-inch sensor, announced in 2013. Specs - Maker: Sony - Lens: built in, 10-37mm f/1.8-4.9 - Sensor: 1-inch, 13.2 x 8.8mm, crop factor 2.7 - Resolution: 20.2 megapixels - Stabilisation: in the built-in lens or the body - Announced: 2013 - Type: fixed-lens compact Focal lengths on it Its 10-37mm lens frames like 28-100mm on full frame, and f/1.8-4.9 gives about the ...
From Sony RX100 VI: Sony RX100 VI: A fixed-lens compact by Sony with a 20.1-megapixel 1-inch sensor, announced in 2018.
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