Currently, no.
Unless you're dying for DirectX 11.1 & Ultra Fast Boot (BIOS SETTING on most UEFI boards) you're not missing much.
You can always just wait for the other build of win 8 without metro that is supposedly coming out.
from all the win 8.1 rumors going around
the start menu and booting straight to desktop is coming back (wont see metro at all)
You can already boot straight to desktop with Stardock's Start8, its not even an expensive program...
from all the win 8.1 rumors going around
the start menu and booting straight to desktop is coming back (wont see metro at all)