None of the above
Still using 2007 personally, and at the office many are still using Office XP and 2003. 2010 really only offered enough advantage if using Share Point, which is still too expensive for most, (though I would love to be able to use it where I work, but there is no way they will pay the price). I don't see any good reason to upgrade or to put my work in the cloud, with so much things being hacked these days. I faith in the security of the data is not great. Nope, no reason to spend scarce funds on needless upgrades.