Have had it for 6 weeks now and am sick pleased with my white paper, bought at Amazon Marketplace.
Readability is great, battery life is also always (for the second time today).
Especially I was impressed when I sat out in the sun and read, just fine.
An additional + to Amazon who was kind enough to remove all the ads on my device. Probably because I bought so many books over the years.
Would recommend this highly, but try to buy it without the ads unless you are big customers of Amazon since you atleast can not take advantage of the offers displayed.
Using caliber to read epub books, works perfectly.