You should try Vista... You have no idea how much new features there is in Vista. And interesting things you can do with it to increase your productivity, and stop searching for your apps, delete/cut/move/etc... a group of files, and more. They are small features, that are not worth marketing for, but when you add them all up, it makes Vista very interesting.I recommend using the 64-bit Vista, as it seams to lack of a LOT of bugs reported, including the lack of network issues. On yo your second point. There is nothing revolutionary in Mac OS X. Most things were stolen from Longhorn, and even THEN these are just little features... including instant search. That is NOT revolutionary. What is revolutionary can only be found in some movie... Minority Report? And that is not going to work, as it would be too different, and people won't adopt it.