OpenSUSE for most of my systems. It has been going for 7 years with no upgrade issues, and nVidia hosts an OpenSUSE version of their proprietary drivers, so you get good GPU support. YAST2 GUI, btrfs snapshot, and rollbacks mean if you break something you are up and running by picking another boot snapshot. On an older laptop from 2010 i gound NixOS was the best choice out of all the distros