This is day 3 of using the Asus transformer with the optional keyboard and I would have to say that it is a good bit of kit.
The battery life is loooong, with the keyboard connected, it lasts for days with normal use. The screen is very sharp and it's very snappy with smooth scrolling and fast performance. It makes the Samsung Tab I have here seem slow.
A couple of funnies, at the time of writing, BBC iplayer does not display pictures but I would put this down to Android 3 and not the Asus. The facebook app is a little unstable, but again, I would blame the newness of the OS for this.
Some of the apps still rotate the screen to portrait mode overriding the orientation lock but again, early days android 3.0
The GPS and wifi seem more sensitive than the Tab.
I am really using this as a netbook with the keyboard but so far so good. detaching the keyboard is quick and looks solid and the unit can stay on whilst you dock and undock.
Good value, solid and works very well.