Surprised nobody mentioned that the HD700 is socially abnormal and will get stares and questions if you wear such large headphones in public while walking around. TH900 and K812 as well. I wore a much smaller pair of Bluetooth headphones and I got all these "Cyberman" comments. However, if you meant you wanted these headphones to use while you were in an office, that would be fine.
I liked the HD700, and once you get used to them other headphones can sound weird... but they're not a reference/neutral headphone. I like their thick mids and cohesive presentation (except it does have a small treble area in a bit of a "spotlight," but I liked that okay too), but they're not what I'd call neutral. What is neutral anyway, I can hear things better through headphones than live performances in most venues