Mint has so far been super stable for me. What's misbehaving for you?
The biggest issue I have is Firefox crashing on me about every other day, usually after a YouTube binge. I had the exact same problem with Chromium when I used to run that. I think in a single week of running Mint, I'll use Alt-F2 the same number of times I used the XKILL command the entire time I ran Crashbang.