I never used Ubuntu as my daily driver so it is hard to say what is better, but PopOS has been great and has good defaults. It was not hard to adjust despite having used OSX for the previous 12 years. I work from home 95% of the time so working on a desktop was an option and I still have my old 15" Macbook from work around when I need to travel to the office. I will probably just get it upgraded when Apple refreshes the 13" Pro.
Anyway, +1 for PopOS and you do not have to run System76 hardware to use it.