I have the E5Cs and they are great sounding (especially with a good headphone amp). The wiring is stiff and can transmit vibrations if bumped around. They work well in a noisy environment.
For the E3's, it'll take a *lot of experimentation with the various flanges and plugs to get them to sound decent. Otherwise, zero bass. These are isolating, which is a bit uncomfortable in most circumstances. Forget about chewing on, or eating anything whilst wearing. It'll sound like Godzilla chewing gravel in your head.
E3 is awesome under circumstances where it's ok to block out outside sound, totally. Very nuanced, tight clean bass, natural highs. Have not tried Ety. Art
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