I want to buy or build a new computer. I want fast access and response, especially disk wise. My main usage would be editing video, music, and pictures. Media center capabilities would be nice. I see the new graphics cards from Nvidia like the 9800 GTX+, and drives such as the WD 10,000 rpm model. And there's also Flash memory, but I think this is too expensive for now. So many choices. Dell and others have really nice high end game machines in the $4-6k range, but is this really what I need. Also, should I build instead of buy? TIA.