So I just replaced my old full metal jackets, and this new design has some issues for me. First off its great that they had blackberry and i phone users on their mind when designing these, but it leaves anyone with a regular mp3 player to not have any mute or volume function anymore. So basically unless I am using my blackberry with these while I am boarding I cant mute or turn down my volume without diggin out my mp3 player from my pocket. Kinda Lame. The only improvements I see from the old designs were good ones though...the ear foams pieces are great, and getting rid of the rubberized cord that used to catch on everything and rip the buds from my ears.