I'm going in the opposite direction - we're an Ubuntu shop, but I'm considering transitioning to Debian. Ubuntu is too much of a moving target, it seems, and seems to want to go its own way a little too much. It's focus is less on the server and more on the desktop and mobile, though I don't know how much that would affect future work.

One of our coders had to figure out something to fix a problem in his ubuntu desktop, and reported that he'd found a guide that showed it was done a different way in each of the four previous releases. I think they're doing fine for their original target audience - naive users - but I'm cautious about their constant change and go-it-aloneness.