Ultrasone? While I haven't heard the DJs, I have never heard an Ultrasone worth the price of admission. I owned the Ed.8LEs and while nice, I'd easily take at least half of the headphones I've covered here (and they all cost much, much less....like $300-400 vs. $2000 ).
Don't want to keep a closed mind, I am willing to give them a try...just not plunk down my hard earned money on a pair to find out. The Signature Pros though do measure reasonable well. I'm personally more interested in them.
Definitely do not write them off!!
I had both, somehow found the Pros more uncomfortable and decided to stick with the DJs (more airier, bigger soundstage, slamming bass when track commands it!). The Sig Pros were my gotos alongside the HD600s and Mad Dogs for quite a while.