It's been a while since I've posted. My last major audio purchase was a Bifrost/Asgard/HD600 (first version for the Schiit) about two years ago. I'm thinking about upgrades/sidegrades and am wondering what direction I should move in. I really like my HD600 and think I will keep it regardless of my other purchases. I don't expect to have a different headphone as my "primary" headphone any time soon and if I am to buy something right now, I will get headphones and I don't plan on upgrading other gear soon.
I listen to a lot of indie music (especially chill music with female vocals) and really like my HD600 for that, but I've been wanting to get more into electronic music. I would generally like a complement to my HD600s.
I like the sound of the HD600s a lot: the dark quality is perfect. I don't like bright headphones at all: my Alessandro MS1s were challenging for me to listen to, and they're one of the more balanced headphones of the Grado line. The mids are good for a lot of what I listen to, but could be toned back a bit in a complementary headphone. I would like to have a headphone with more PRAT/speed for electronic music (I am not entirely clear on how speed doesn't fit with PRAT, so help there is welcome). A bit more bass/slam would be good as well.
I've been thinking that a new headphone would be the HE-400, HE-500, or LCD2 (yes, I do know that those are completely different classes of headphones). I'm reasonably sure that I want orthos (and as an aside I don't want any of the other phones in Senn's lineup, as much as I like their sound). I'm not really considering cost/value too much here. Which of those (or others), do you think would meet my needs best? I'm really looking for a complement to my HD600. The headphone doesn't have to be "better" or "worse" than the HD600.
I would like to get a headphone that meets my listed needs best and that I would not ever want to sell. That is, I would like to be informed of headphones that meet my needs best now and in the future. I don't want to upgrade my source right now, but may in the distant future (years from now). If I do upgrade my gear, it'll be to get some serious end-game stuff that I can't buy any time soon. In that sense, a new headphone MUST work well with my current setup, but it is a pretty good bonus if it scales well (as is the case with my HD600).
Comments on comfort are appreciated, but not prioritized. I have briefly auditioned all of the headphones I mentioned in this post and am fairly certain that I won't find orthos that are more comfortable than Senns. Also, I would love to know if there's knowledge of upcoming headphones that meet this profile. I'm open to suggestions, but anything too far beyond the cost of the LCD2s is a bit much.
What do you guys think?