I'm a dev who's considering getting a Mac; currently running Ubuntu 16.04 on a Dell XPS Developer Edition, as well as 18.04 on a self-built desktop from 3 years ago (haven't used Windows regularly since 2014). Mac Mini seems like the best choice for me, because I do less damage to the environment and my wallet getting a machine that lets me buy/upgrade/replace the screen, keyboard, mouse, and RAM separately. I would probably go for the 6-core CPU (would probably last me 5+ years), 32GB RAM, and 512GB SSD (not much of a music, games, or movies person).