i also have the HD280 and i find them less fatiguing than the sonys i've had before (my last 1 was a v600). which is both a pro and con since it does lack a bit of "oomph" which you might find with the more expensive cans.
when you first use them though you'll feel like your head's getting clamped on a vise. they feel real snug after awhile. and your head doesnt get all sweaty either in warmer weather (i did with the sonys)
i ended up getting the HD280 mainly cuz i got it for about $80 brand new
