I'm about to purchase a macbook Air. I'm seriously considering getting the base 11 inch model. I like how small the 11 is and I actually prefer the aspect ratio to that of the 13. I really only need to browse the web and write, and cost is the biggest factor, so the MBA 11 seemed like a good fit. However, this is going to be my only computer for 5+ years, so the small hard drive might become a problem. I do not have a meaningful amount of music (I download podcasts to my iPhone), but I do watch quite a bit of TV on it. However, since I decided to no longer use iTunes (because it is terrible), most of this will be done using streaming from Amazon. Do you think I should invest in a larger hard drive, or would 64 be enough for those things?