Bests & Worsts Reviews from Amazon

I have been a huge Kindle fan ever since the beginning when the 1st Kindle cost me $329, and the Kindle Paperwhite is my 4th Kindle. I had the highest expectation for this Kindle, and yet this is also my biggest disappointment. I had all the previous Kindles, so I bought the Paperwhite ONLY for the better screen. But it turned out to be either an immature technology or very poor quality control on the part of Amazon. When I first turned on my new Kindle and turned up the screen light, I immediately noticed some very conspicuous bright/dark patches at the bottom of the screen. Of course, if the screen light is turned off and if I'm reading from strong reflected sunlight, nothing would show. But when I start to read in a darker environment and I turn on the screen light (only to a level of 5), I begin to notice the dark/bright patches at the bottom. Turning the light above 5 definitely makes it more obvious. When the light is on, there are also bigger patches of faint coloration in the center and upper-left of the screen. This only goes away when the light is turned off and I'm reading under strong ambient lighting. The text on the page is also uneven sometimes, with text in the center of the screen appearing slightly more bold than the ones close to the edges of the screen. So, uneven dark/bright bands on the bottom of screen, faint screen discoloration, and uneven rendering of text, this must be a defective unit. But my chat with Kindle Support was the real killer. This is part of the chat I had with the representative, it was copied from the actual chat screen and pasted here. ***** Jawahar:Thank you for confirming. Please understand that this is a known issue and expected behaviour of the Kindle. However, I'm unable to make any comments on the online forums as we haven't received any. I will forward your feedback on this to our concerned team so that they will look into this. Thank you for taking your time and letting us know about this. Me:I would like to return this unit for a replacement Jawahar:Please give me a moment while I look into the possibilities for you. Thank you for waiting. I checked with the device details and see that the issue you're referring is an expected behavior of the device. Please don't misunderstand with the Online Forums as they are not officially related with Amazon. Me:My request is unrelated to any forums The screen should not have discoloration, should not have uneven rendering of texts Jawahar:Yes, I understand but as this is an expected behavior of the device, we have no option to replace the device. If you're still not happy with it, you can return it for a refund as the device is still in return window. ***** This is really disturbing and appalling. How can the uneven lumination of the screen, discoloration of the screen, and uneven rendering of text be "expected behavior of the device?" This is by far the worst product I've received from Amazon, and the worst technical support I've received from any product manufacturer.