ok. so im planning on upgrading my hard drive. i have the stock 120GB 5400 RPM drive that came with my macbook and i need more space. so i was looking on newegg.com (any suggestions to any other websites would be appreciated). I want a 7200 RPM drive and something 320 GB or larger. so i saw these 2. a WD and a Hitachi. i have a WD 500GB usb external and its worked great. i dont have any experience with Hitachi though. any thoughts on which drive is better? which one would you get? http://www.newegg.com/Product/Product.aspx?Item=N82E16822145228 http://www.newegg.com/Product/Product.aspx?Item=N82E16822136280 Thanks for the help!