I switched to Dell Precision Develop Edition 15" at the start of the year. It comes preloaded with Ubuntu 16.04.

I have really enjoyed this machine and don't miss my MacBook Pro at all.

The machine worked great out of the box, I made a few minor changes to how I like to work.

The two major changes I made were:

* Install a libinput and get rid of synaptics driver * Install the latest kernel

I run with a bunch of proprietary drivers (nvidia, intel, etc.) and don't have any problems

The only thing that I miss having is Sketch. But I just run a small Windows VM and use PS when I need it.

Majority of my time is spent in Chrome/Firefox, Terminal, gVim and Slack, so I don't miss anything Mac-specific.

If you're looking for help on how to get yours configured, there are plenty of guides if you search for: Dell XPS 15 Ubuntu or variants of that.