So, after many months of deliberation, I decided to take the plunge and bought a Microsoft Surface Pro 2. I have to say, I'm really impressed. I've never owned a netbook or ultrabook before, so it's taking a little to get used to the small size, but I love the portability of it. I needed a full-fledged laptop performance, but was also interested in having a tablet too, so having both in one device is great. I got the 8GB ram version, which is sufficient to run my resource intensive CAD programs.
About windows 8, it's so much better with a touch-screen. Other than the general lack of availability of apps, I'm starting to really like it. I'm forcing myself to use the start screen as much as possible and am becoming much more comfortable with it. I'll even say that I quite like Internet Explorer. It's the only browser that's truly built to take advantage of windows 8. It's too bad that it's totally separate from the desktop version though.
The type cover 2 keyboard is wonderful to type on. The stylus sensitivity is great. My only complaint is that the dock for the stylus is the charging port. So if you're charging the device you have to put the stylus down. Knowing me, it'll be lost in a couple of weeks.
For me, it was down to the Surface Pro 2, Lenovo Yoga 2 Pro, and the Sony Vaio Tap. But the 8 GB of ram and the detachable keyboard won me over. I think it's still priced too high, particularly considering the keyboard was an extra $130.