so i have owned the koss porta pros for about one year and i would like to upgrade headphones. i have a budget of ~$100.
the reason why i want new headphones is:
-better sound quality
-less sound leakage
-some more sound isolation if it is possible at this price range
-i would prefer that they not look horrible but that is not a requirement
also i am planning on purchasing fiio e6 amp if that would make any difference
thanks in advance