I am going to buy the 13" MBA as the title says, but I am torn between the two. Usually, I will try to buy the best gadget available because I think I will not regret it. However, this case is different. The price tag here in Singapore is S$1688 (~1360 USD) for the 128 SSD and S$2088 (~1680 USD) for the 256 SSD. The price difference is more than 300 USD, but yet what you receive is just 128 GB more of internal storage. With that 300 USD I can spend on an external hard disk of 1-2 TB and still have money left to buy a hard case and a sleeve for the MBA. From my past experience with MBP 2008, I only used around 60-80 GB out of 320 GB HDD (documents, music, games, Adobe Suite, etc.); my movies and downloads are in the external HDD. I don't edit movies, photos, and play games that much. Therefore, I think I can manage with the 128 SSD one. I am not going to bootcamp or something. And though I bought an MBA for portability (but I hate the small screen of 11" so I will go with the 13" option), I don't mind bringing an external HDD along to anywhere I go. However, one thing I'm afraid is that the files will get bigger over the years. I am planning to keep it as my primary computer for at least 2-3 years. So I don't know if 128 SSD is enough (even for important files only). I can save music and stuff on my iPad, iPhone and external HDD though. One of my friends say that 256 SSD is not even enough, so go with 128 SSD + External HDD though. And one more thing, I have heard that the i7 causes a lot of heat and noise to the laptop, and there is not much of a difference to upgrade to i7. Is it true? I am not a power user, and I am a student, I am trying to be as economic as possible. So is it worth to upgrade to the core i7? Edit: I have sold my MBP already, so I will need a new laptop as soon as possible. Any piece of advice is much appreciated.