I finally got to play with a real one, and I'm still happy I pre-ordered. Very, very fast. Decent amount of apps pre-installed. Still very confused how to navigate around. Switching from "Metro" to desktop confuses the hell out of me.
I'm also worried about the number of third party apps that will eventually be available. Things like Spotify and Chrome most likely won't be available at launch, and that will hurt. Also a limited number of social apps. I do sense that a large number or RT customers will be pretty pissed off when they realize that this is not full windows. Now Microsoft has Windows Phone 7 and 8 apps, Windows 8 PRO and RT apps. Messy.
Gorgeous hardware though - puts my Transformer Prime to shame.