So my second session with the Z7s...some Nirvana tonight and I'm really digging their relaxed sound. They seem to isolate reasonably well too. The bass has a bit more bloom (and not as controlled) that what I'm used to (coming from the SR009/007, HD800, LCD-X, TH-900), but overall I'm still enjoying what I'm hearing. Plus these cost a whole lot less, so maybe the comparisons aren't totally fair either?
They image quite well for closed headphones too.