I have the 2019 XPS 13 with the hidpi screen. It runs Linux beautifully. I used to run Ubuntu 18.04 and now run Manjaro. Both work without a hitch. I use GNOME, so the hidpi performance is really great. I strongly recommend the XPS 13 line.
Does the graphics system hold up? I wasn't able to find anything with reasonable CUDA cores (I do parallel algorithm development). Anyone have experience with Precision mobile workstations? Still seem quite slim form factor.