The (very) first post at the top of the Windows 8 Forum is titled:
"Poll: How do you like Windows 8 so far?"
I think you'll find the opinions you're look for. Unless you're only interested in those with HP systems. It's worth a read, even if it is the case..
It seems that the majority of posts I read hammer Microsoft for it's lack of support for the new Windows 8 OS: What's your take on Windows 8?
Ever since I upgraded my RAM to 8 GB and installed Windows 8 Pro, my computer doesn't "quite seem right" and has major problems booting when I turn it on in the morning.