Summary: These are budget-minded basshead's dream come true. Others might not be satisfied by the bottom-slanted sound, which can be hugely improved with equalization, otherwise they sound dark and laid back. The sound is precise, with engaging musical quality to it.
Pros: Indestructible build, good "musical" sound quality, good soundstage
Cons: Huge bass boost, cable could be more flexible, no neck cable adjuster, wide nozzle, shallow fit only, weird over-the-ear fit
Summary: I've had the Brainwavz M2 here for several weeks, and I'm sorry that I haven't had the time to post my thoughts on them sooner, but I'm doing so now after enjoying them the whole time. My Star rating is against other IEM in the $100 and under range.
Pros: warm, fun and spacious sounding
Cons: slightly boosted bass that could use more control