Totally depends on what you use your computer for. I use my optical drive about once every 12 months and all of my important files fit easily into 128GB. With t

Totally depends on what you use your computer for. I use my optical drive about once every 12 months and all of my important files fit easily into 128GB. With the proliferation of media services in the cloud, that number continues to drop...I now listen to Pandora 10x as much as my iTunes collection.