I want buy 3 new hard drives for my mac pro. I want them to be internal because for some reason my external drives make imovie unstable and besides that they are kind of crappy. I was thinking of buying three Western Digital 1TB Caviar Black drives. http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284 Are these any good? anyone have any experience with these? Any suggestions? One last thing. No I don't want an external hard drive.