I have both the 770 and 880 2005 consumer editions and enjoy both of them. For gaming the 770s have better sound isolation and more bass. Overall they both sound very close and very good. If you live with and are around others a lot and want isolation and not to disturb them then I'd go with the 770s. As for consumer vs pro, I don't know what the differences are so I can't help you there. I'm sure you'll enjoy either headphone.Never mind my last question. I would like to know which is better for games and heavy music, the Beyerdynamic 770 or 880? And which version, like consumer, pro etc.? Thanks.