You're getting pretty close to a laptop once you add the keyboard to the mix, and the killer product you then start competing with is the 11" MBA.
I'm voting MBA without hesitation, but everyone has different needs.
Re:Microsoft Introduces New "Surface" Tablet
by Terretta on Tuesday June 19, 2012 @04:49PM
(#4134090)
I get that, but 95% of my iPad use is as a reference/reading device and I really don't need the keyboard or the (comparatively) short battery life of a MBA for that.
On the off chance I'm going to a meeting or an overnight, I swap Apple's smart cover for the Logitech which is also a smart cover.
This is the opposite of inconvenient:
http://reviews.cnet.com/8301-31747_7-57415771-243/logitechs-...
This, plus a good SSH client and the Google apps app, makes a laptop redundant, and is a very nice cover and perfect airplane tray stand to boot (thanks to offsetting the screen away from the seatback in front of you).