I'm also getting the 11". Coming from an iBook 12" as my first portable Mac, I really found it a bit of a shame that they increased the screen size to 13". The 12" was ideal and followed me everywhere.
The MacBook G4 was also fine, but for some reason my current MBP 13" (2010) doesn't get out much. I don't know why it seems so heavy? I've been resisting the new iPad and still use my original iPad for Flipboard etc.
The 11" is going to be a more productive portable than the iPad, and I can't wait to use it for traveling, libraries, coffee shops etc. Wish I'd had one during my studies, but I waited for the new version (8/128) and this one will be my graduation gift instead.