First: Win 8 Second: Win 8.1 Third: Win 8.1 UpdateThe third iteration on Win 8 isn't bad. Less tile world, more Win 7 like interface. It's really not half bad. But it's certainly not Win 7.
In Jan, I bought a new Ultrabook that came with Win8. I immediately upgraded to 8.1 so no experience with Win8.
That said, Win8.1 blows away Win7 in both speed and stability.
My Win8.1 Ultrabook boots-up almost instantaneously.
Checking 1 box allows Boot-up direct to Desktop - just like Win7.