I also have a Dell Precision 5520 (business version of the XPS 15). That line (XPS 15 / Precision 55xx) is the best combination of weight, performance, and display quality that I've found among business laptops if you need something truly high-performing. I find it's not a problem to use on a plane in either First Class or even Economy+ but it's definitely too big to work in Economy. Battery life is good enough, but not great. At home/office, I dock it to 2x 4K monitors, which it easily drives.
The XPS 13 is decent if you need something more compact, but it does not have a dedicated GPU available, even as an option. With displays packing more and more pixels, this is a dealbreaker for me these days. You should only really consider it if you're truly a road warrior where the weight/size is more important than performance.
Dell Next Business Day onsite warranty for business laptops is great.
Originally Posted by
garykung
I would not choose a Dell as well. Dell tends to have a lower resell price, implying that Dell may be overpriced.
Resale price is unimportant in a laptop you're going to keep for 5+ years. In reality, Apple laptops are by far the most overpriced hardware considering what they are, and yet they have the highest resale value too.