I have both a 2018 15" MBP and an X1C6 running Arch. The X1C6 is a fine Linux laptop but it's significantly slower than the 15" MBP. The keyboard is better tho

I have both a 2018 15" MBP and an X1C6 running Arch. The X1C6 is a fine Linux laptop but it's significantly slower than the 15" MBP. The keyboard is better though. I still prefer the MBP, and if/when Apple fixes the keyboards on them it will be even more tilted in favor of the MBP.