Here's an interesting tidbit regarding the Tab: Apparently it will do 7hrs video (which is not a big deal). However the spokesperson during a slashvideo demo of the device said that it would do "much more" when simple web browsing.

http://www.slashgear.com/samsung-gal...ideo-03100528/

This should be taken with a crystalline cluster of NaCl, but if this is true, battery life expectations may be stellar, and provide yet another desirable aspect.