[esaias]

I've been a Beyerdynamic user for some years, I've been using DT991, DT990, DT854, DT770.

DT99x series are open is a good buy
DT77x are closed and sound a bit too middleish IMO

I think the Beyer has this smoothed sound on them, you can listen/monitor stuff thru them for hours and hours without ear fatique. They are quite good cans in general and very comfortable to wear. They give nice perception of the sound and are not so crisp (or snappy) as Sennheiser and Sonys are.

BUT!

Then I got to listen Ultrasones and I found them REALLY good! Although they might be difficult to find (I mean locally if you want go and have test-listening) I've put Ultrasones to my have-to-buy-when-enough-cash-list.

I highly recommend to check out the Ultrasones and the top of the line Beyers

-Tomi