[DrGroove]

I'm looking to possibly get some headphones after using IEMs exclusively for quite a while. They would be used with a Focusrite 2i4 and most likely a Schiit Magni,

-Closed, or at they at least can't leak too badly. I need to be able to use them late at night with 1 cheap door of separation.
-Very low bass extension, I want to hear the sub 50Hz rumble with an overall neutral response
-Budget $250, used or not
-Mostly music and movies

I've heard the DT770 80ohm long ago and liked it, but I read that the 250 ohm responds well to a good amp and doesn't have as big of a mid-bass hump that the 80ohm version has. That's pretty much my front runner, but does anyone else have suggestions?

Here's an example of some of the low bass music I like
http://youtu.be/NjobYCSmvmk?t=2m45s
or
http://youtu.be/QKNf691Wtq0?t=35s
 
edit: I'll add my thoughts on other headphones I've looked at.
Sony MDR-1R  - another possible front runner, but not sure if it has the bass I want
VMODA M-100 - reviews say it's more of a fun headphone and not as refined, but I love the construction. Also expensive.
AGK K550 - Not really sure what to think
Fostex T50rp - mad dogs are out of my price range, but there are some other small places that mod them

 

[timbo1130]

I just purchased some dt 990 pro 250 ohm for $159.99 with free shipping. There are like four sets left. I don't know how they compare to the 770's but i know they are known for bass and they are in the price range you listed'

 

[DrGroove]

Down to DT770 $160 or ZMF modified T50RP for a little over $200