Hmmm...usually true but not always, particularly with headphones. Cans have become a bit of a fashion accessory and there are certain name brands (Skull Candy and Dr. Dre spring to mind) where you spend more for the name than for the technology.
I agree. I use
Sony MDR V150's, for simple monitoring for tracking full band situations. They are basically disposable crap headphones, that do the job of allowing players to hear. While, at $20 per, it don't piss me off so much, when they get stepped on, or the guitar players girlfriend rips the cable out of the adapter. $2 lifetime warranty, actually got me 5 pairs replaced...
My personal set that I use for listening, while tracking, are the MDR 7506's. Much better build, but less pronounced in the low end. Better for me during long sessions.
As far as accurate headphones are concerned, I really have not found a need to spend the money yet. I hate-let me elaborate-I HATE having cans on my head for more than a few minutes. Sucks the life out of me. I would send home a client, that wished to pay me $500 for a quick 20 minute mix, after having my head strapped by a set of cans for a half hour. I myself, feel that I need an hour or more to get my head straight, after being stuck in headphone space.
I have used expensive headphones, and they do the same to me. I can't friggen stand them. Evil bastards!