I have a dilema. I have a rMBP with an LG screen and a fair amount of IR. Although it is only noticeable when switching to a dark grey background. However I am wondering whether to bother getting a replacement unit. What is the guarantee that the same problem wont crop up on the new unit? How do they handle the transfer of data from old to new unit? I need my machine for work and am wondering what the general time frame for getting a replacement? I would really appreciate some advice on this.