ok I am another than must sing the praises of Grado
I've been using their SR80's for about 6 months now.... absolutely love them. Everyone I work with uses the Sennheisers... I've tried them, and I'm just not crazy about them.
I guess it all depends what you are plugging them into.
I'm probably one of the few people that actually has a full rack mounted pre-amp/eq at work just for their headphones.
just my 2 cents but avoid Bose, if only they dumped as much money on R&D as they did with their advertising, then maybe they would have a decent product.