I’ve had the iPad for almost a month now, and I’m still loving it. Its not any one thing it does that makes it so great, its a million little thing. The big screen makes everything easier to use. Browsing the web is so much better. Reading email is wonderful- especially in landscape mode with emails on the left and a message on the right. Using apps that were made for the iPad helps make the apps better: Twitteriffic, IMDB, MLB At Bat (AMAZING for a baseball fan like me), NetNewsWire, and Flight Control, among others. And everything is really fast- on top of everything else that makes the device.
But of course its not perfect. Even though its running iOS 3.2, its really a 1.0 version for the platform. I expect 4.1 to be much better. One thing I hope they improve is file sharing between devices. Its very clunky to transfer files and keep them up to day. I’d love to see better integration with at least MobileMe for transferring files. MacObserver has a good article about the less than stellar iPad file sharing.
I think that will be fixed in time though.