Haven't heard the new Fostex...but based on measurements and various impressions, I'd probably take one of the old Denons. One thing I'm curious of, though, is how the Fostex ones are apparently so bassy in comparison, given they have internal damping pre-applied. I thought the Denons had minimal to no internal damping? Maybe it's the pads or driver baffle design. Leakier cups? I dunno. Would have to pop both open and look.
Another thought, Creative seemed to do a good thing with the Aurvana Live for the price. Hoping they can do the same with these two headphones, given E-Mu is just their pro line or something like that. (This is the same E-Mu, right?)
Y'all know I'd still mod anything thrown my way anyway.