I use a Dell XPS 13 with Ubuntu and I love it. Most of the complaints I have seen are either nitpicky or because the early versions did not have good HW support

I use a Dell XPS 13 with Ubuntu and I love it. Most of the complaints I have seen are either nitpicky or because the early versions did not have good HW support in the kernel. The latter has largely been fixed, and the former is only relevant if you are also nitpicky (which is okay!).