Okay so here's the little pickle I'm in. I'm looking for new headphones, and I'm having trouble deciding. So here's some stuff I think you'd need to know. (Kind of a newbie so if I'm forgetting something please just tell me) I listen to mainly bassier types of music (dubstep, rock, metal, etc) And I have 2 headphones in mind after going through forums and such. The hifiman he400 and the beyerdynamic dt990. These headphones will be used only at home, which is typically a very quiet place which is why I picked open back. I most likely will buy an amp for the headphones asap. (2-6 months?). I have a heavier leaning toward the hifimans' however I would like to take other headphones in mind in case there are tremendous ones which I haven't seen. So if anyone would like to recommend me any different ones, or maybe give me advice that'd be greatly appreciated.