Windows 8 64 and AMD 12.10/12.11 beta opinions

[proinside]

Does it worth to upgrade to Windows 8 ?

Any significant improvements, related to any of hashcat versions ?

And the now available 12.10 and 12.11 beta AMD drivers behavior,
while using any hashcat versions (the last ones) ?

Has already anyone run it ?
Would be good to know opinions from those that already did a
test to decide if it worth to change or simply stay with Windows
7 64 for a while.

Thanks to anyone who want to share their experience.