Hi all, My wife's 2007 macbook pro desperately needs a new harddrive. I am not sure which one to buy. I am thinking about the following: -A fast Western Digital one. Does black scorpion vs blue caviar matter? Do they all work on her pro? -Seagate Momentus XT 500gb. I have read a lot of negative things about reliability and compatibility. I distrust seagate but some people love this one. By the way, she is running Leopard. An SSD is too expensive and doesn't have enough space for her. And might a RAM upgrade also be useful? From 4 to 6 it would be. Thanks all.