TRapz
500+ Head-Fier
i have zero experience with shure iems, but i think that you should give sennheiser iems a try!
I need the isolation, and the Shures and Etys supposedly give the best isolation. IE80s seem to be pretty bad at isolating, from what I hear. I'd love to try some Etys however, and have almost enough for a pair of ER4s; I doubt I'd buy them though. Maybe if I sell my Shures.