I love IEMs. Portability is crucial, as I use them at work, traveling, and exercising.
I currently own (and love) a pair of Shure 535's, but have been considering investing in some JH 16s (although I will probably wait to see if they do another Black Friday deal this year).
Without a way to truly audition customs, this is a problem I'm sure many IEM fans face. Can someone shed light on on what types of improvements I can expect to hear from making the jump from the shure's to the JH? If I primarily used unamped, portable sources (lossless files of course), is the investment even worth it?