haha I don't own them(they're my dream iem), but I audition them extensively. So I can give you some ideas based on my demo section. JE and the Z1R are really different sound signature iems and great sounding in their own ways. Basically, I will say JE sound more natural and have a more 'monitor like' sound, even the 'club sound' version JE have really well-controlled bass, the strength is coherent and smoothness here, it's that kind of iem that won't impress you at the first glance, but when you listen to it in long period you will find it an all-rounder and really comfortable sound. Also, the JE is much easier to drive than the Z1R. The Z1R is the more musical one with punchier, more dynamic and exciting sound, the soundstage is far superior and treble extend better than the JE, which can immediately impress you technicalities wise.