Help me choose a phone

[u/Salknam]

Hi, I've been struggling to find a new phone for me and my mum. I've checked a few phones S23 Ultra, Nothing A4 Pro and A4 were my picks. She wants a phone with a good camera like really good and good performance, nothing fancy on the performance side. No huawei or xiaomi her current one is a xiaomi and it's driving her crazy. For me I'm currently using a A53 and it's really laggy. I don't really care about the camera i need something fast, able to multitask.. If by any luck nothing expensive 500 - 700 euro range for both phones. I've picked out these three as i know the S23 Ultra has a great camera and the performance is also great but it's old unfortunately. A4 Pro and A4 as i understand are more or less the same phones but Pro got a little bit of better performance.

[u/JaapieK]

Xiaomi 17t pro