A friend of mine and I are upgrading our harddrives in our laptops. Unlike me, he jumped in and ordered the biggest he could find, after we agreed that Hitachi Travelstar's were what we wanted to go with. He purchased an ATA150 drive in 160gb, but his computer's interface is ATA-6. Oops. First question; what is the difference in the drives? I don't suppose they are compatible, are they? I did some research and found that mine is ATA-6 first (marked ATA/IDE, had to do dome lookin'), and then started shopping. My computer is a 1st generation Dell XPS (9100), and still pretty durn fast, and I would like to keep it that way. Therefor, I want to stick with the 7200rpm drives as was installed in my machine. Hitachi only makes drives in 7200rpm up to 100gb, and that's a little smaller than what I had in mind. The reason for going with the Hitachi is the fact that these two drives have been bulletproof in the rough environments we have used them in (Kuwait and Iraq for the last two years, my machine being three years old). Second question; keeping the 7200rpm speed in mind, is there another brand's drives that anyone has had good luck with? I've had good luck with Seagate's Barracuda drives in my desktops, but have no experience with their laptop counterparts. I have had bad luck with WD's Caviar drives, so didn't consider them at all. Please chime in with your opinion, and specific models if you wish. I'm looking for large capacity, say bigger than 120gb. Thanks, all! Fred Wanna kill these ads? We can help!