DDMs W11 are bass heavy!
i found the high performance Monster Turbines to be ample in size, however quality quality was sketchty, metal housing was heavy, none of the tips were a great match, and the cable could be improved
i'm a bass lover, rock, metal, disco , percussions etc...after using all sorts of IEMs ( at least 30+ different models) - buying and selling.
My vote goes to Apollo Audio Labs - Stormbolt.
See the review I wrote
Its a stainless steel earphone that has INCREDIBLE Bass. Goes really deep, not the fat boomy type, but the bass has a lot of textures and the sub-bass quality is sub-woofer standard.
The earphone has dual diaphragms (very rarely made) thus you get excellent bass and very good mids and highs too !