Bests & Worsts Reviews from Amazon

I've been a LONG time Amazon customer, but this is the first time I've written a review so needless to say, I feel very strongly about this. I was one of the customers that pre-ordered this new Kindle Paperwhite. I've wanted a Kindle for years and this NEW Kindle looked great! I used the free shipping but it was delivered very quickly after its official release. However, as soon as I received it, I noticed a line of dead pixels right in the center of the screen (Note pic #1). I online chatted with Danyielle who was incredibly helpful! She suggested that I return the old one and buy a new one to guaranteed a new model (instead of a possible refurb). She even upgraded my new Kindle for a free 2-day shipping. I was pleased. Product defects happen but at least Amazon's customer service is top notch! Then comes the 2nd Kindle... (see pic #2) As soon as I received it, I noticed very uneven lighting throughout the screen and some light leaks at the bottom of the screen (where light comes in) which created spots of shadow throughout the bottom of the screen. I even compared it to my first Kindle (with the dead line of pixels) and confirmed the lighting was definitely uneven on this 2nd Kindle. I look at screens every day for a living so it might be easier for me to notice these things than others. I was very bummed. I went online and requested a refund. And I ordered a 3rd Kindle, because I really want a Kindle! Then comes the 3rd Kindle yesterday...(see pic #3) It's definitely not a charm. There's a significant amount of dust and unrecognizable particles under the screen..I've read other reviewers talk about this but it's pretty shocking to see it for myself. The 3rd Kindle has already been dropped off at UPS to be returned. Now Amazon's customer service is incredible and deserves a 5-star rating. But I am not sure this product is up to par. Kindle is an incredible product and makes reading so much more enjoyable. But who wants to stare at the screen for hours when all you can notice is dead pixels, or dark shadows, or unknown particles under the screen. I am not sure if Amazon was trying to make a deadline so this product was prematurely released. I've never owned a Kindle so I can't compare it to previous models. I'd REALLY like to own a Kindle - but I am scared to order a fourth one that's defective again. As easy as Amazon makes the return process, it's still a huge inconvenience. I am also losing confidence that a fourth one would have a proper screen for a brand new product. This has been incredibly disappointing.