They’re both solid phones. I’ve used both but if you’d ask me today I would pick the SE without a doubt, mainly because it’s smaller and lighter. I used the XR for over 2,5 years before switching to an SE 2020 earlier this year. I had become really tired of the size and weight of the XR and didn’t feel like splurging on the 12 mini (or by then, upcoming 13 mini). I’m really happy with the SE. The main advantage with the XR is having better battery life, but, as someone already stated in this thread, the SE charges kind of quickly with a fast charger. Having the big screen of the XR is of course nice as well, but for me it is much more important to have a phone I can somewhat easily manage with one hand if I want to. You just have to ask yourself what’s most important to you.