It's a superb device, it's better than I expected and the available apps are growing rapidly! The touch keyboard is much better to use than you'd expect, it's a weird experience using it at first !
Isn't the x86 version a bit expensive for what it is?
Not really, it's about the same price as ultrabooks and have the same internals as an ultrabook (i3-i7's) with a higher res screen than the Surface RT.