Hey man, if you are like me and you listen to a wide variety of music, I would HIGHLY suggest the BS1. It's very versatile and I can listen to anything on them without worry. Just this morning at work I've listened to Black Crown Initiate (progressive death metal), Major Lazer (pop/hip-hop), Madeon (EDM), and a few other artists, all on the BS1, and all without ever getting the feeling of "man, I need a different set of buds for this song".
Since you said metal and electronic are your two main genres of music, I can confirm that the BS1 has enough bass to enjoy both (basslines in metal and bass kicks in electronic), a non-fatiguing treble for cymbals and hi-hats (as long as you use foams), and accurate and tonally pleasant mids for vocals and guitars. There's good separation of instruments too, so I don't feel overwhelmed when a song gets complex (which both metal and electronic songs can do depending on the artist).
I know Sean recommends just the right setup, but for me personally, I've been able to use them with anything with no complaints.
@seanc6441 You pulled the trigger?! Congrats man, definitely let us know how you like the new source (make sure to take some glamour shots
).