Ultimate; But also depends I do think Ultimate may be the best of all. As everyone knows, no matter which version u install, it takes the same system requirements and the same system file size. However, if home premium already satisfies your needs, you are able to have more choices. Of course, it depends on what you need and how much can you afford, if you buy genuine Windows7.
So do I, does anyone know if starter edition still has a limit of 3 maximum apps? How about the background? Never changes? This is why I hate Microsoft!