I like System76, and my two previous work laptops came from them (both served me for over four years each; I only had to replace the last one due to a hard to diagnose RAM issue), but I can't recommend them to anyone outside of the US. By now they really should have gotten into bed with an EU distributor to handle warrantee, customs, and shipping, because it's just too costly and too much of a hassle to deal with System76 with an ocean in between.

I'm using a Dell XPS 13 pre-loaded with Ubuntu now. I had to order it by telephone because the option to configure it with 32GB of RAM and Ubuntu wasn't available on their website (in this respect Dell really sucks with their localized web shop, but at least you can contact them within the EU), but no hassle with customs and shipping, and warrantee isn't limited to the US standard of one year by default, but the EU mandated standard of two years. If it breaks down, I can get a replacement within a week; that's just impossible with overseas commerce.