Long time Mac user (1991) and had an iPad for a couple of months now. I'm in love with it.
Steve Jobs will hate me for saying this but I think this is what Newton should have been from the beginning. Sad that we've had to wait so long for the tech to catch up with the ideas.
But now I have given my MacBook to my partner and use my new baby for everything I used the MacBook for, with a Mac Mini for syncing, main storage etc.
PS. I have an iPhone 3GS as well ;-)