I think it will work well for personal machines. I’m going back to Windows 7 on my work laptop. In our case the apps we use just aren’t compatible enough with it yet and the interface doesn’t yield itself to higher work efficiency.
Evaluate very carefully whether or not the software that is essential to you will work. Windows 8 is a big technology jump so you need to use the compatibility wizard and be sure. Don’t assume that if it works with Windows 7 it will be fine.
All of the benefits remain. It is super fast, even more so than 7. It’s a fresh approach to interacting with a PC and I think that the majority of users will enjoy it as they get used to it.