I returned my iPad rMini after swapping them out a couple of times at the Apple store (dead pixels, dust particle under screen, etc). I realized that the rMini really had screen issues, so decided to buy the iPad Air instead. So I went out today to purchase an iPad Air from a seller on craigslist and was really worried as I have read multiple threads that said getting a perfect screen is like winning a lottery. But what do you know? I received a perfect screen for my iPad Air. The serial number for my iPad Air starts with DMPLL, so I guess trying to connect the serial number with screen quality doesn't work. (There are numerous posts saying that people had horrible screen with ones that started with DMPL) I am in love with my iPad Air and just wanted to let people know that there actually are screen issues with some iPads, especially rMinis. Its not people just being OCD with their products. Anyways, good luck everyone on getting a good screen!