Windows 8 is a lot better at loading the proper drivers out of the box (didn't have to download a thing on the two systems I've done clean installs on),
I hear this after every windows release and it's completely false. Naturally, Windows 8 includes drivers for more hardware that any other release. It includes drivers for hardware made between the release of Windows 7 and now plus what was in Windows 7. It's no better at finding drivers, it just includes drivers that were not included with Windows 7 or Vista or XP or whatever because the hardware was made after the release of the OS. In 3 years, Windows 8 will be in the same state as Windows 7 is now... go out to the vendor's website, find the hardware, download the driver, click next a bunch of times, and reboot.
Other OS's bundle most drivers with the kernel and provide regular updates through the regular channels for both bundled and third-party drivers. This way you don't have to screw around with the vendor's website trying to remember if your motherboard is a DK-790FX-MR2 or a DK-790FX-MR2SW 2 years after you bought it.
Better multi-monitor support
I'll have to disagree here too. I tried the consumer preview with 3 monitors and... well... I can't say I was impressed. The regular desktop was just like Windows 7 (fine) but Metro didn't seem to know what to do.