Navigation is greatly simplified. You can switch quickly between windows and forth and multitasking becomes simply more convenient.
The startup is much faster than Windows Vista and the user also does not eat as much memory as Vista.
If you should ever run into problems with programs that are designed for Windows Vista or Windows XP, so you can easily switch to the compatibility mode (only for Professional).
Intuitive use. Who was quenched as XP users to now of the shortcomings Vista and Vista releases, will not have any problems with Windows 7. One can adapt to the changes very quickly. In Vista I have until the end have to fight with many functions.
As XP users you will not get around in the long run to Windows 7 than Vista users, it is mandatory. Windows 7 in my opinion is an improved version of Vista, where finally all gross deficiencies are remedied, who annoyed me black. The price-performance ratio, it is clearly in front of the Mac and also in terms of looks and features, it can keep (although I can find some Mac features oddly with Windows 7).
In short, it is for Microsoft fans finally the long-awaited sign that momentum comes back to the store. For Mac and Linux fans, it is a serious alternative.
Four stars are there, because it is not the revolution that I expected. Nevertheless, Windows 7 makes you want more.
Have Fun