I am happy with my Lenovo X1 extreme running pop os. It has been running for 4 years, just changed battery and hard-drive, which I could easily do myself. It is of high build quality.
I terribly want to try out a system76 computer, but haven't had the chance yet.
PopOS is awesome. It's what I use on my XY Thinkpad (repurposed Intel/hexa-core/12-HyperThreads/64GB/matte-screen/2TB(SSD+HDD)+256GbNVME/VGA/Trackpoint/USBC/laptop)! Nothing better imo, unless he[1] adds an E-Ink option!
I terribly want to try out a system76 computer, but haven't had the chance yet.