Guys, I currently own a Shure E2C and Klipsch Custom 1. However I have not been too happy with the sound on both of them and looking to upgrade. I heard the Bose in-ears and they sound horrible. I've been thinking of getting one of the following: Klipsch Image X5 Shure SE420/S310/SE210 Q-Jays Sennheiser IE 6/7 And all this talk about single/double, dynamic/balanced armature drivers is really confusing me. If anyone wants to suggest better cans. I'm all ears.