Vista is the most exciting version of Windows. It is not only a large architectural change, but there are vast changes in the way the OS deals with security from the core of it. Vista has the most capacity than any other OS. It deals with viruses and with those which invade the other softwares.
1) Utilization can be metered just like in cell phones.
2) A strong OS against virus attacks and powerful security.
3) New and cool advanced XP Graphics that are soothing to the eyes.
4) Vista also redefines the idea of the desktop (earlier it was for only for files or folders.)There is a new slidebar where you can place applets designed for some specific functions. (Clock, Calculator & RSS FeedViewer and so on.)