This one was posted a few days ago. It's a bit too euphoric - even for my taste. The iPad can't be that good.
But in a few days some real heavyweights are bound to give us their two cents after some serious face-to-face with the magical device - that is according to this article: http://www.macrumors.com/2010/03/23/...ter-this-week/
You are right, there will be reviews by people who will have used the device for more then thirty minutes.