Mint is a great OS, I used it off and on for several years. I enjoy getting my hands dirty and I like fine-grained control over my OS though, so I've always gravitated back to Slackware long-term. Not to drag out the dreaded car-computer analogy, but it's why I keep my old 1982 farm truck instead of buying a more modern work truck; it's simple, I know it inside and out, and it runs just the way I want it to.

But you can't go wrong with Mint as a "get out of my way" OS, as you said.