buy these in LARGE, T200.
thank me later.
I think the major issue with these iem's is in fact the horrible tips that are included.
The Large T200 Comply tips seal very well and you'll get the bass you were hoping for.
JWoltersIt's amazing what different tips will do for the sound. While it is a pain to experiment, the reward is great. Bought M300 Monoprice and couldn't appreciate them until it burned them in and changed tips. Now they are spectacular.