Good points. The color thing on the nook I always thought was a little stupid. It does, however, take SD cards, and I like the chess and sudoku built in. but the keyboard on the kindle does have some interest for me, too. I can't decide if I should just save up for an iPad instead(or equivalent, cheaper tablet later), or skip the whole thing entirely. Also one thing I don't like about the e-books often for sale as a whole is that they're either free "classics" that i've already ready from project gutenberg a billion times, or they're like.. the stuff you buy in airports. super lame. i'm still torn.
a big draw, though, is as a portable PDF reader. I like white papers/research papers a lot.