I recently bought the Samsung Se-506BB bluray/dvd burner for my rMBP. It has a lot of good reviews on Amazon and seems mac compatible. So far of the 10 discs that I burned, only 1 worked properly with no issues. The others either wouldn't play, or play with issues like pixelation, stuttering, fast mode etc. I'm returning it to get another unit to see if that's the issue but I started this thread to see what other folks are using. thanks!