The NY Times review of the Kindle DX griped about the weight of the Kindle DX being a bit heavy for long term reading. However it weighs nothing perched in it's jacket. See photo below. The Kindle DX stands quite happily on its own and is perfectly readable at 18 inches or so away.
The Kindle DX is worth the extra money just to be able to have the larger screen real estate in landscape mode, and have text large enough that I can stand it up and not hold it.
The single row of buttons is fine in the orientation shown. NY Times also griped about the elimination of the second row. I like the slightly more minimalist style, in favor of maximal viewing area.
The Kindle has quite simply, completely revolutionized my reading habits. I love this thing. I'm devouring books. Irena has one now an so does Richard, my nephew, who is an avid reader of biographies. So now we can share one library. The devices all synch up so we can pick up any device on the same account an pick up where we left off.
Now if only they just had a color version. I'd gladly dispense with my hard copy magazine subscriptions to be able to read them on a large screen color Kindle. Or perhaps Apple will beat Amazon to the punch on that one.