Starting with their speed and performance, Windows 8 somehow manages to top Windows 7. The difference might not be relevant for some, but with just a few seconds difference in terms of speed, it’s a sizable amount, especially for frequent users.
Now for the user interface, it will actually depend on the user’s perspective. One would see Windows 7 as more user friendly and more manageable, but another may see Windows 8 as the better choice. The upside for Windows 8 is you have the option to switch back to the Windows 7 desktop theme.
Compatibility is always an issue when talking about operating systems. Luckily, they are both compatible with almost all applications and programs. The only key difference is that Windows 8 was developed at a later time, giving it an edge for troubleshooting current compatibility issues.