Thanks lukEM22 for mentioning the discomfort of the Hfi780. I got used to it so I forgot about that particular trait
This from someone who doesn't mind the tank that is the Koss Pro-4AA.
I just noticed how many vice grip like closed headphones I have. One that is definitely not vice grip painful and is very comfortable with huge pillow size pads are the Sony MDR XB-500. It to has an excellent balance of strong bass and clear treble. With equalization its strengths shine even more. I play it from my Onkyo 8555 stereo receiver which is probably why I never have to equalize it to get the sound I like. I heard it has been discontinued but you can probably get it from Amazon.