Well, gotta say the WD. I've got three of them humming along in my machine right now, 2x 60GBs and a 27GB and had zero problems. Had a Seagate and lost 20GBs on it when it died less than a year after I bought it. They replaced it and I quickly sold. Of course I could have just been unlucky with that Seagate, but for me it only takes once to lose all your data to not trust a company again.