Originally Posted by joseph69
Go and demo some of the Grado models
In my experience, Grados are pretty awesome for rockn'roll, but lack the bass "bite" for distortion guitars and bass guitar in metal. Personally, I like something with a heavier bottom end for the bass, cohesive mids and treble that is not super-pronounced to counteract listening fatigue.
I'd say the Hifiman HE-400 fits well...it has the speed for double bass, great mids and non-sibilant treble. Instruments can be heard clearly in separation for bands with denser arrangements. Only thing lacking is a big soundstage, but then again, I don't think that is a big requirement for most metal recordings.
OP, since you've mentioned Rammstein, I'd like to confirm that they sound amazing on the Hifimans. I'm a big fan too and they are one of the first bands I play to check how I would like a certain headphone.