Just a heads up, I have a lot more to complain about the XPS13, but it's basically exclusively BIOS issues [1]. I think they also need to improve the heatsink/paste, but maybe they have for the 9380 model.
[1] The BIOS releases are not always in increasing version numbers. They're repeatedly re-released versions, or released versions from different old servicing branches, etc. Someone commented that they thought Dell was sort of doing wide-scale A/B testing by releasing different versions and collecting feedback. Seems a bit presumptive but it's been in my head.