I just got a pair, and speaking as both musician and sound engineer, I'm impressed. I'm not really in love with the tips though. I'm an average 5'11"/170 lbs guy, but they just don't seal in my ears. The medium silicone tips are too small, the large ones are alright but don't stay in amazingly since they don't contour to my ear well. The comply ones are -almost- amazing. They seem a bit too small for my ears though. They go in the right depth, but don't expand enough to seal completely and stay sealed. And before anyone asks: yes, they're in the right side and wrapped over my hears like IEM's are supposed to be.
Anyone have any suggestions on how to make them fit/stay in properly? I'm thinking about getting some Comply's in large (the T-500's?), or is there something better? I realize there's other people talking about fit, but it seems that everyone is saying they're too big, not mismatched with their ears and probably too small. I was also looking at checking these out, because I saw a Lifehacker article once about using them with earphones:
http://www.amazon.com/Radians-Custom-Molded-Earplugs-Red/dp/B002XULPSQ/ref=sr_1_1?ie=UTF8&qid=1334039627&sr=8-1. Of course, I have no clue how that will go with sound quality...
EDIT: After fiddling around more, I take it back. The I don't think the problem with the Comply's is entirely so much that they're too small, but that they don't have enough foam on them to mold to my ear well. The large black silicone ones seem to work reasonably well. I'm not super happy with the sound isolation with them, and unless I'm going crazy (I did just run sound for 5 hours solid...) I'm definitely not getting anywhere near 26 dB of isolation. Aftermarket tips are definitely sounding like a possibility, because I can't afford to get them custom molded. What I would really love is Comply's except with a thicker foam layer. Is there something like that?