So I'm really getting frustrated with the image retention on my rMBP since it's inconsistent. I went to the Genius Bar last week and we couldn't reproduce it, but I've had it since. I'm debating asking them to swap my computer out for a BTO model since both the ones I've checked with 16GB of RAM have been Samsung displays. Since this is a computer I use constantly and plan to keep for 2-3 more years, I'm really scrambling to get a good screen. Should I just hang onto the one with the shoddy screen and put up with this, or ask them for a swap? Do you think speaking to a manager is worth it?