I was mostly referring to the much nicer user interface.
That said, I hate it. I can't stand the UI, it's not that it's "ugly" (which it is), but that it's really not functional. Things are just hard to find and others don't work the way I expect them to.
Plus, it has a lot of 'missing features' I now expect because of things like GitHub like tagging issues, naming Bugs as "Issues" because I like that everything (anything really) is reported like a todo list (not just 'bugs' in the regular meaning of the word) and other things.
Not an Ubuntu hater here, just someone that hates stale software.