Bigjohn,
I bought the Sennheiser HD-280 closed ear headphones after trying several other brands/models. I think they sound terrific and are very comfortable. They have a gold plated 1/8" jack with screw-on 1/4" adapter. I run them on a $30 portable CD player with no problems. Also they don't leak sound in or out. I bought these about a year ago for $100. The goodcans website turned me on to the 280s which are shown on the page below. You'll have to cut and paste because I'm a posting buffoon:
http://www.goodcans.com/HeadphoneReviews/recommendations.htm
Good luck.
