Yes - they were available at those prices earlier in the year. I'd be surprised if this is true now.
Yes - they were available at those prices earlier in the year. I'd be surprised if this is true now.

Beyer Custom One Pros! Real bassy cans!
Im really considering these!
What has more sub-bass? the PRO 900 or the D2000's? I have heard the D2000's have a very nice sub-bass rumble...
D2000 - To me the Denon's are the king of sub-bass (yes, over the XB series)
Pro 900 has a huge mid-bass hump which also changes the relative perception of sub-bass.
The D2000 is the closest headphone I have heard to a subwoofer
You haven't tried the Beyer Custom Ones yet
I think these are great bass cans, I prefer them over the D2k and other bassy cans like the XBs. I really liked the bass the D2ks, but the only thing that I didn't like was how muddy it sounded. It was very satisfying, but the control of the bass was a slight issue for me.
I've found the Ultrasone HFI-580s to be excellent headphones for electronica in general. Great bass and all that. Might be a bit bright for some songs, but overall I've found myself reaching for these over my 598s on a consistent basis. Might not be pushing the 300 dollar limit, but I've found them to be rather good for the price.

You haven't tried the Beyer Custom Ones yet
I think these are great bass cans, I prefer them over the D2k and other bassy cans like the XBs. I really liked the bass the D2ks, but the only thing that I didn't like was how muddy it sounded. It was very satisfying, but the control of the bass was a slight issue for me.
I haven't tried the Beyer Custom One...although would want to at one point. D2000 muddy...hmmm...they aren't tight like my HE-500, but they aren't muddy though. Sure in the sub-bass at times they have a slight bloom but definitely don't hurt the mid-range...what were you amping them with?
I see you have CD5003, I myself have the CD5004 and use it with JDS Labs O2...definitely not muddy, although the bass control I can see your point.

I haven't tried the Beyer Custom One...although would want to at one point. D2000 muddy...hmmm...they aren't tight like my HE-500, but they aren't muddy though. Sure in the sub-bass at times they have a slight bloom but definitely don't hurt the mid-range...what were you amping them with?
I see you have CD5003, I myself have the CD5004 and use it with JDS Labs O2...definitely not muddy, although the bass control I can see your point.
Maybe because my standards are different than yours. Maybe because I'm so used to my other HPs that if I try the D2k my ears will instantly categorize it as boomy, slightly lacking controlled bass. I never said they hurt the mid-range, and I don't remember any bass bleeding into the mids. I amped the D2k with my EF5, E11, and just straight from my Hifiman HM-602 (the Hifiman has plenty of juice to power full-size cans).
Yes, Marantz CD players are quite brilliant for the price 

Maybe because my standards are different than yours. Maybe because I'm so used to my other HPs that if I try the D2k my ears will instantly categorize it as boomy, slightly lacking controlled bass. I never said they hurt the mid-range, and I don't remember any bass bleeding into the mids. I amped the D2k with my EF5, E11, and just straight from my Hifiman HM-602 (the Hifiman has plenty of juice to power full-size cans).
Yes, Marantz CD players are quite brilliant for the price 
Yea I agree with this completely. It was just previously that you said they were muddy, which would be something like Beats - bass control and being muddy are two different things.
Yup, the Marantz CD players are indeed quite brilliant - hassle free, awesome performance. 
For the genres the OP specified, I do find the Ultrasone Pro 900 to be a very high performing set. Zoom25 had mentioned that its mid-bass alters the perception of sub-bass, and I definitely agree. Now, don't get me wrong as sub-bass is present, just that the mid-bass overshadows it a bit.
All in all, Ultrasone HFI-580 and Pro 900 are some of the best headphones for EDM, each on different price and performance tiers.
This gave me the answers and input I was searching for as well. Very insightful post, MalVeauX. I am going to purchase the Q40s and the E11 this coming Thursday, my first pair of real cans.