I know that the Beyerdynamic market is quite different from the AKG market in many cases, but I would be eternally grateful if someone could tell me how these compare to the AKG K141MkII's and the AKG k240 Studios.
If that isn't possible, then possibly how they compare to the Sennheiser HD25 I-II's.
I am looking for a good gift for my father, who is an audiophile but doesn't know it. He fell in instant love with both my AKG's, this coming from the aforementioned Senns. If I understand the way he listens to music as well as I think I do, then priorities would lie in soundstage and mid-to-treble detail. This is for multi-genre listening, but all in all a lot of classical, and classic rock. I don't want to get him the AKG's due to the poor isolation. This is a man who flies a lot, and planes get noisy.
Thank you for your time