There is a comparison done by Cnet for these two models. Koss Portapro has these top swivel clips that might get caught with the hair. Thats the main reason thats putting me off ... hair is precious esp when you know with age the value of hair becomes higher for males
Most of the recommendations quite expensive. I thought Koss is value for money with at least 3 to 4 times lesser in price with that sound quality. Bass is superb, and far better in comparison with Sony of the same price range IMHO