Microsoft has put together a more compact feature comparison guide that looks at Vista Home Basic, Home Premium, Business, and Ultimate editions. It doesn’t dive into a deep comparison but it offers a quick overview of the differences.
If you are looking for some more information and specifics then you will probably find this post I made to be beneficial. It talks about a good deal that you can get at NewEgg on Vista Home Premium if you purchase Windows Media Center now. That post also refers to a large comparison guide that I assembled from the Vista Product Guide made available by Microsoft a little while back. That guide is much more extensive than the one that Microsoft just posted and will give you a much better idea of what you can and can’t do with each version of Vista.
I still struggling with whether I want to get Vista Ultimate so that I’ll have the best version even though Vista Home Premium looks like it would satisfy all of my needs. It’s a tough choice trying to determine which one I should get since the price difference is so great. To try and make Vista Ultimate sound like a better deal I keep telling myself that I’ll be using it for the next 5-years. :)