I recently switched over to Mint from Debian and first tried Mint 14 with Cinnamon. I found that both Mint in general and Cinnamon in particular ran extraordinarily smoothly and well, but I did run into one annoying issue I couldn't solve. Cinnamon seems to have no way to set the number of workspaces available. That being the case, every once in a while I'd be using some desktop application (often VLC in full-screen mode) and the app would suddenly shift to the other workspace. I disabled the "Hot Corner" feature, thinking maybe that was the problem, but that didn't help. Under other DEs I'm familiar with, normally the user can stipulate how many workspaces he/she wants. I always go for a single one, but didn't seem to have that option in this case.
It was annoying enough that I ended up going with Mint 13 (I like LTS editions) with Mate for now, but although Mate's a fine DE too, I'd readily switch back to Cinnamon but for that one issue.