So I'm going to upgrade my iMac storage. I did my research and I found that the WD Caviar Black 1TB drive was probably a good choice to go with. I was reading what people said about it on here and it got pretty good reviews but the only complaint I have seen was it is a little louder. Now I was just going to go with a 1TB but I just found out I can also get a 2TB. I don't know what to get! I have enough for both. Which one should I get 1TB or 2TB? I have a lot of movies and music.