Pretty sure I'm going to return or sell my 622F's. The sound is too sharp for me, and they push quite strongly on my jaw - probably because I have a smaller than average head. I can't stand to keep them on my head for more than about 10 minutes at a time, both comfort and sound wise.
I would suggest you try the HD681 EVO, you will find they don't have the harsh highs of other Superlux models, they appear (from product photos) to provide less clamping force than the HD662 models, they ccan be had for $50 or less, and they just sound so much better than $50. I can wear the HD681 EVO for hours on end with no discomfort or aural fatigue. If you want to compare hed sizes, mine measures 23 1/2 inches in circumference and I wear a 7 5/8 fitted (New Era) cap.
Edited by muzzle - 8/25/13 at 10:40pm