A paid user + big fan of gitlab. They exist in a strange valley between github and Atlassian where usability has remained high while also being featureful. Their kanban is 10% more functional than Trello, which is all our small team really needs, they give you everything and they don't nickel and dime you. The only feature I would like to see improved is their PR process. Seems a bit buggy with remotely large changes…
They may have fixed this since last year, but it was super, super annoying to me at the time.