let I just begin this review by say I do not comment on many product I buy from Amazon although I order something at least once a week . I have have pretty bad luck with earbud . I have use Sony until they begin to short out on I every six month -lrb- I guess I sweat too much during workout -rrb- . I move on to Sennheiser and I be pleased but at $ 55 for a pair , they be okay . I be one of those `` weird '' one that like both treble and bass equally . I buy a pair of Sennheiser here on Amazon on sale . they be a dud to say the least and I find my old pair I have lose for awhile and continue to use they . I end up give the sale sennheiser to my sister . to make a long story short , I purchase the j3 -lrb- shortly after have purchase Skull candy full metal jacket earbud -rrb- . I be satisfy with the Skull candy fmj but still look forward to get my j3 . can I just say it be worth the wait ? they blow I away and all I can say be wow ! I do not know about the whole `` burn 'em out '' - or be it `` in '' ? - who care ? they be wonderful out of the package ! I only plan to use they at home as I have my trusty , efficient , german sennheiser for my workout -lrb- they still work after 3 year so I can not complain too much ; they be great , just not enough bass with the treble -rrb- . the j3 be perfect as the treble and the bass be equal and compliment one another . I listen to metal , hip-hop , industrial , rap , dance , pop , r&b; , electronic -lrb- so I can not comment on opera , classical , country , etc. -rrb- and I love they ! they make every genre sound wonderful . I plan to order another pair just in case - for travel if you will as I would hate for anything to happen when I go away on vacation . if you want to appreciate you mp3 device - whether it be Apple or Zune or anything in between - do not be without these earbud !