Also use a thinkpad, X1 carbon from 2015.
Run Manjaro with gnome-shell (actually gnome-shell-performance until 3.32 is released). Its lightening quick, reasonably stable, good battery life.
I also tried KDE, which works quite well, but the battery life was quite poor and I find the general KDE experience abrupt.
Now my 2017 mbp just gathers dust, never going back.