I just got a new emac and want to upgrade the hard drive. I see that it is something I can do. My question is will I see any improvment by doing this? Right now my emac has a 40gig 5200rpm 2meg buffer drive. I want to drop a seagate 200gig 7200rpm with an 8meg buffer. Is it worth the time and money to do this? Also want to say I love my new mac and will never buy another PC again.