I took delivery of an Asus Transformer Book today. Really quite impressed with it. Certainly it isn't the 'best' tablet on the market today, but there's definitely a certain appeal to having Windows at your fingertips, and it is hella powerful. I had Project Spark running on it earlier. I quite fancy giving Civ V a go this evening as it has native touch support.
It's quite amazing to think how far technology has moved on in just a few years. I'm finding myself mentally comparing this machine to the Netbooks or four or five years ago - the difference is stunning. We're actually finally at the point where a computer can be small, cheap, powerful and portable, with minimal compromises.