I've got both the ER4S and the Westone 3's. ER4S are like studio monitors where you listen to every detail, every mistake, every problem with a recording. The Westone 3's are like the opposite of these where you wanna enjoy the music regardless of how bad they're recorded. That about sums up the Westone 3's. Accurate reproduction? Hell no. But good enough reproduction to enjoy the music? Yes.