Originally Posted by SundayDriver
Overrated: Grado SR80i (ducks for cover)
Underrated: Denon D600 (Comfortable, easy to power, and a pleasant frequency curve with nice detail. They give the K550 a run for the money IMO.)
Totally agree. The Denon D600 is one of my favorite headphones that doesn't get much love here at head-fi.org.
Some other underrated headphones:
Ultrasone Pro 750 (everyone loves the Pro 900, yet most agree the Pro 750 has the more balanced sound.) I have the 750 and really enjoy them.
Shure SRH-940/SRH-1840 - these got a lot of attention 18 months/2 years ago and then dropped off the radar. Two outstanding headphones - balanced, great sounding, but basically ignored.
Bose AE-2 - Super light weight, probably one of the most comfortable headphones available, with a very pleasant sound un-amped with MP3 players and smartphones. Seems some folks have a visceral negative opinion of anything labeled Bose, but these are nice headphones.
And last (ducks for cover from the stone throwing):
Sony MDR X-10 - Got these as a Christmas present last year. Super comfortable for an on-ear design, punchy bass with surprisingly good mid-range and treble for a bass tuned set of headphones. Yes, you see these everywhere in Target, WalMart, and Best Buy mixed in with the Beats, Sol Republics, Soul and other celebrity headphones. But they're not the joke folks make them out to be. A very fun set of cans to use straight with your iPod that sound really good, particularly with Pop, Rock and dance tracks.