Having just returned from an international flight, I can say that Delta's light were more than adequate.
I usually use my Kindle 3, along with the built-in light from the Kindle case.
However, this current trip, I wanted to read from my new nook Color, and see how the reading would be on a non-eInk device. It was very, very nice.
However, in my experience the overhead lights on the planes do vary - but pleasantly so and without any problems.
Don
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