They finally gave up the ghost last week when the plastic swivel mount broke, leaving one cup loose. I bought these new and they've only lasted me around 6 months. I feel these served me like a pair of 20-quid cans, but I paid a whole lot more for them. In all I was very dissatisfied with both their sound and build quality.
I know some poeple like these cans, but for me - never, ever again.
I just took delivery of my new Sennheiser HD215 and I'm reasonably impressed. The cups feel a bit thin plastic-y, but they seem solid enough, the cushions look like they'll stay put, and the cable is a decent length.
Like all closed-back phones I've used these sound a little tubby, but no more than the 7509s. In fact I just checked a mix and was alerted to some sub-40Hz activity I needed to address! Not bad at all. There's nothing like the depth and detail of my beloved AKG K701, but I neither expected it, or need it - these are mt cans for monitoring while we're tracking vocals in the control room.
Not an extensive review, but sufficient to help guide anyone who is travelling a similar path. I'll report back in a few weeks to give my impressions of the HD215 after more extensive use.
Hope that helps someone, somewhere!
An Eagle for an Emperor, A Kestrel for a Knave.