I've now cooked mine for more than 200 hours. They sound terrific. I will do a more full review later, but these are easily worth the money. They are more forward in the mids than any of my Beyer headphones, but they have an excellent bass foundation, and so the midrange forwardness doesn't make them painful; in fact, it's a nice change-up. Treble is detailed and extended, and very present, but not edgy or fatiguing. Pretty impressive sound for the $200 I paid. They are a very easy recommendation for anyone wanting a good sounding closed can that isolates well. Of the headphones I own, they sound most like the Denon D5000, but they isolate much better. The Denons are much more comfortable, but after "Stretching" the 780's as recommended above for 100 hours, they are comfortable enough.
Nice job here by Ultrasone!