Hi Everyone, I'm looking for better sound than my Sennheiser PX100s can offer now. I am looking at a new pair of headphones and something to drive them: my source would be my Toshiba Satellite 6100 playing music, games, and watching the occasional movie. My budget is 250-400 bucks, preferably around 300. I'd prefer an open, circumaural design but am willing to try supra-aural or closed if it offers significantly better sound quality. Comfort is a factor for me, and I want something that can be worn for 3 hours+ without discomfort on ears (my PX100s are great in this aspect). Portability is not an issue. I was looking at the Beyerdynamic DTX900 for headphones, but not sure how they are with gaming. Could anyone help me out? Thanks very much. Edit: Please help!