I tried an XPS15 and gave it up after 2 months. 1) Constant problems with Broadcom wireles. Supposedly they employ someone to work on Linux drivers but I never

I tried an XPS15 and gave it up after 2 months. 1) Constant problems with Broadcom wireles. Supposedly they employ someone to work on Linux drivers but I never heard back from them. 2) As has been mentioned HiDpi support in Linux is not good, I ended up using 1920x1080 anyways. 3) Defects. I did not have coil buzz, but accidentally shaking the laptop too hard (e.g. in one's bag, or tapping the bottom) would cause screen/gpu to glitch and require a hard restart. 4) Dual video support on Linux is also quite poor. In practice running Bumblebee gave only marginal improvements. Compared to a MacBook Pro: build quality is worse, it is heavier, battery is worse, wifi problems as mentioned. I would stay away from any Dell products in the future.