had one. It died. Battery swelled up, I replaced it. It died forever because, I think. I closed the lid and put it in my bag. Doing exactly that is what makes a laptop a laptop. It was a couple of months out of warranty and you can't even contact Dell to say "Is this your quality? Is this acceptable to you that your laptop is this bad?" You need to plug in serial numbers on their website and they just tell you to get lost. Can't email them. Can't do anything.
So yes. The Dell. I do NOT recommend. They are garbage quality devices and their support is utterly terrible. Wildly overpriced for what you actually get.
Avoid.
XPS 15 laptops appear to have an unresolved mouse lag issue that is noticeable under linux (but seems to happen in Windows too). Seems to not happen with external mice. Annoying but not a big deal. There is an open issue for it but no patch yet.