Oh - how many have you heard (and I don't mean a 2 minute listen either)? Why would you say they are over-rated?
Oh - how many have you heard (and I don't mean a 2 minute listen either)? Why would you say they are over-rated?
Have you heard all of them?

Which ones?
I'm taking a guess here that you like a nice amount of bass response, if so then the SR60/SR80 are not
really for you - most of the Hi-Fi praise for these two cans is assessed occasionally on the iPod but
mostly via a decent CD player and receiver or pre-amp with a headphone out - the material is usually typically
'Audiophile Country' - Jazz and Classical, maybe some female vocals.
Hifiman He-400s. Although I did pre-order these and get them during the 1st batch where many were defective, they did absolutely nothing for me in terms of sound quality. While both channels worked I found their sound underwhelming in almost every regard. Needless to say they went back.
LCD-3, and HE-6. Overrated (specially when compared to HE-500, or LCD2 if you dislike treble that much, and even HE-5LE if you need/like a more "U curved-like" type of sound).
It just seems that planar-magnetic headphones got so hyped everywhere that Audez' and HiFiMan just decided to suddenly go premium on their price...
Best (still in production) headphones, to me (with no budget restrains and considering the SOUND only -- and not convenience, isolation, etc.): Beyerdynamic T1, Sennheiser HD800, Stax 009. Period.*
*Then there's the Symphonie's Magnums, the PS1000 and the PS500, but Grado's have a very specific type of signature (that I do like a LOT with SOME but not with every music) that's just not for everyone...
EDIT: thought I must say that I only heard: PS1000, HE-500, LCD-2, HE-5LE, HE-6 and HD-800 from this list. The rest of my assumptions is based in looong readings here and other headphone websites (inner-fidelity, headfonia, 6moons...) and performance graphics (frequency response, square waves...). Can't say, having heard HE-500 and LCD-2 that either HE-6 and LCD-3 would be worth more than USD$1'000.00 while you can have a headphone like HD800 for that price. But that's MY taste, of course, some might disagree...
Uhh...yeah we can agree to disagree. 
Did anyone actually like the Image One?
Lets see, I think the last time I posted in this thread I said the ATH-M50's and the HD25's were the most overrated.
I'd like to take back my vote for the HD25's though. It was only after I got them into a loud environment that I understood why they are so great. It really does sound like they were tuned to sound normal in loud environments, which makes total sense, since that's their intended use. However in a quiet environment, they always sounded a little weird to me, and I never could put my finger on it.
Anyway, the ATH-M50's are still the reigning king of overrated headphones. I don't think they will ever be topped.