I just picked up on my Australian colleague Aaron Parker's mention over at Stealth Puppy of the Windows Vista Product Guide's publication. One of the very many useful bits of information contained therein is section 2.02, the Windows Vista Editions Feature Table appearing in the Guide's initial pages and listing the features comprising each version of the product. If you're wondering which version of Windows Vista is best for you, this table is invaluable in making that decision.
Stealthy, indeed :)