Well, since I'm the local tech geek king...
I have Windows 8 Pro on my laptop, desktop and backup laptop. I also have a Surface RT (the only touch device).
On Surface, I'm in the new interface constantly. on the laptop and desktop, I almost never use it.
Windows 8 is noticably faster on all machines.
For those that poo poo the Surface RT. It's a perfect device for consumption and has handy content creation option when in a crunch. In fact, It works perfectly on the site for stuff. And unlike, say the iPad, the editor actually works with it on the site...
IE10 also happens to be a really good browser. It's fast, responsive and standards compliant. It's a shame it took MS so long to get there. But better late than never I guess.
I will say after using the Surface for a little while, I have a tendency to poke at my laptop screen now...