Kindle DX not optimal

I must admit, I have given the 5-stars reviews expected a bit more from the Kandle.
The quality is very good and more batteries are included. What has disappointed me is that you can not quite optimally illuminate the Kindle DX. For smaller areas it is sufficient, but on the larger DX Area occur already bright and dark portions.
I have not compared the lighting of Kandle other diode lamps, it may well be that it is much better in comparison. But whether this justifies the enormous price difference remains doubtful ...
Was for me a birthday present and I'm glad to have got the lamp takes some useless stuff. I will also use.
Had she but probably not bought for me and preferred to wait, what more appropriate manages.