Need to consider the source that is being played also. Always best to bring your own 4K HDR 50/60hz files to test. Usually, they play the same unknown source in stores on many displays. Sometimes they use 1080p source since there are non-4K displays in the chain as well. If you notice, the LG Oled in places like Harvey Norman always plays a different source compared to the other non-OLED tvs.

I didn't test the other day coz I was not keen on buying yet but would be interested to know what panels they use and if its really better than the 630X. To my eyes they appeared better due to the brighter screen and better colours but can't really say anything about details & HDR. Sharp models are hard to research about due to the models are not global.

The Toshiba models I mentioned earlier are IPS panels but they did look very good. To my eyes, some IPS panels look better than lower end VA panels due to colour and brightness which bring out HDR very well. But black levels are bad so watching movies at night in the dark is not very immersive. For living room TV, IPS is usually a good choice if budget constrained.