Can't comment too much as I bought it for the missus but I have had no complaints from the missus apart from the usual stuff when you switch from one custom OS (MIUI) to another (whatever Samsungs is called....why don't I know....
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Oh yeah, One UI). It of course blows the Xiaomi out of the water which is what you would expect.
I used it for a bit before handing it over and it seems to be a really nice device, feels nicer than my 10 to use probably due to refresh rate, the battery life seems pretty good, that's about all I can say really as compared to the 10 its just another Samsung if you know what I mean, more of the same, just better, which is what you expect for the next generation, if there is a negative it is purely the aesthetics it looks a bit crap compared to my Note 10 or an S21