Also, I had one; think of the hinge. You can't use it on your laptop in a chair like a normal laptop. Check out the Samsung 700TC, it's 12.2 inches and has a removable 'Asus-like' keyboard with a real hinge. I haven't used it in a while(I'm really liking 8 inches for a tablet) but it was pretty good.
You can buy one of those iPad style cases for the Surface that make it easier to use when it's in your lap.
I think the Surface is basically for the segment who either use it on a table like a computer or an iPad when it's not -- like me. The good thing is that there are lots of competing products that satisfy other use cases.
