I've also got the E3c's, think they're mint. As said they are excellent in the gym as they block out idiots grunting, shouting, chucking weights about etc and are one of the only headphones that stay in my ear.
Excellent clarity and sound separation but could possibly produce a little more bass imo.
Hoffmeister, where can you buy the different nozzle from online as the original grey ones do tend to slip out of my big lobes if i'm running. Want to try the foam ones or the other rubber ones.