Ive been a long time ubuntu user, and with the ubuntu unity/gnome fiasco I've been looking at going back to SuSE or even switch to Fedora since I work on redhat boxes all day.
But I decided to go with Mint, and with the extensions installed, its back to what Gnome 3 should have been. I do like being able to reload the desktop without closing my apps, and the looking glass debugger is a nice touch. I think now that extensions are out, and distros can start using them again, Ubuntu will make a comback. But now that I'm switched to Mint, its basically Ubuntu with the better desktop, I might not go back.
I just wish the gnome extensions were installed by default, so people didnt have to learn about them 2nd hand after they already get pissed off at a crippled and funny looking desktop.