Hey there. I am looking to upgrade the hard drive in my 13" MacBook Pro. I want it to be fast, but I don't want to lose battery life. What would you recommend? I'm currently looking at these: http://www.newegg.com/Product/Produ...re=Seagate_Momentus_XT-_-22-148-591-_-Product http://www.newegg.com/Product/Product.aspx?Item=N82E16822148599 or maybe a Western Digital. Thanks.