Bought in 12/15 from Amazon along with HD 600 and HD 650. Auditioned all three for a month, found the 700 distinctly more resolving than the other two and kept it, returning the 600 and 650. In particular, I like the "speedier" presentation of the 700. I think the "Truly Excite Your Ears" description by Sennheiser is spot on. As one of four headphones I own, it has not been used much: 9/10 is conservative rating.
I just upgraded to the HD 800, which is definitely even more detailed than the HD 700 and has a wider soundstage, but, personally, I am still deciding whether the 800 is really worth the extra money for me. If the 700 does not sell quickly here, I will keep it and likely return the 800.
Check my feedback and buy with confidence. At my asking price I will include shipping to Cont US. Local pickup for $300. Paypal add 3%.