I almost got a U3 some time ago from a local seller. But another local buyer beat me with a significantly higher price offer.
Later when I went to Hong Kong, I saw the U1 in person, which is basically the slower predecessor to the U3, and it was a different color; everything else is the same. I was tempted to trade in my C1MVM for that, but thx to friendly suggestions, I didn't.
The size of the unit is amazing, but the keyboard is really too small for much typing. It is about the same as the new Libretto L100. The screen resolution is XGA, or 1024x768, at 6.4 inch. That is a bit dense at 200 dpi
(as dense as a 4 inch VGA PPC
). And finally the standard battery doesn't last long, and adding the extended battery makes the unit so large it loses the size advantage
So considering all these - keyboard, screen, battery, etc, I am happy I stayed with my C1MVM. Sorry to sound negative about your new laptop; don't get me wrong, it is an amazing piece of technology, but rather that's good enough is up to you to decide