I bought the first generation RMBP when it came out two years ago. At the time there was a lot of talk on the forums about LG displays being inferior (in particular with regards to image retention) to Samsung ones used at the time. I got lucky in that I got a Samsung display, but over the first few months developed 12 dead pixels and ended up going to a Mac Genius to have it examined. He said they'd replace it and when I asked if he had heard about the different quality displays he emphatically responded that "Here we only use the good display (made by Samsung) as replacements!", and indeed put a new Samsung display in (which hasn't had a single dead pixel in the years since). Now that I'm upgrading to the latest generation I see that there are currently good sales at B&H and other stores, but these stores don't allow to return laptops at all. So I'm wondering if purchasing this laptop is still very much a lottery between superior and inferior screens?