I've just ended a brief session comparing Ety HF5, Westone 3 and 4, and B2 on some good quality trance flacs using the voodooed galaxy s. Both Westones and Etys sound way darker than B2. Or maybe, it is the other way around: B2 is exceptionally bright.
I did not purchase B2 as I initially intented. To my tastes, upper mids and treble are too much exposed, brightness is on the edge of sounding harsh and unpleasant. I was interested in B2 because the reviews of CK10 indicate that the headphones are well suited for trance music. CK10 in turn are supposed to be similar (at least in ljokerl multi iem review) to B2. I suspect now that my reasoning was somewhat faulty, perhaps B2 are not really like CK10 when it comes to trance records?
Finally, I consider all the four headphones similarly detailed, perhaps Westone 3 being the least. The Westones have better bass than B2 and Ety.