I have several on-ear and in-ear headphones from Stax 009 Sennheiser HD 700 Denon 7100 on Sennheiser i800 ETC. Home is of course the Stax my favorite, but as in-ear is the AKG3003 a stunner. The so acclaimed Sennheiser cometh not with. And even at home AKG is more in operation, because he nunmal no need Stax-feed part and no headphone amplifier (I among others Lehmann linear, Chord Toucan, Chord Hugo). My recommendation: music in high resolution, for example HIGHRESAUDIO, Hd. tracks or Linn, about good setter as Astel and core 240 or Sony Xperia Z2 (with proper flac-enabled app) or similar, and off you go have fun.