Is it just me or are the screens on 5S's that start with DN's have better color saturation, better shadow details and less chance of having interlacing issues? My Sept. Build DN's screen had great eye-popping colors, sharpness, but it was defective in that there were yellow spots. My first F2's screen (Sept. Build) was just yellow all around; the colors were way off and didn't look right at all. My 2nd F2's screen (Oct. Build) has the perfect white, but has interlacing issues and the colors don't look as good as the DN that I had. Also, the colors on F2 screens look bleak and they have horrible shadow details compare to DN. Can anyone else confirm 5S's with serial number that starts with DN have better screen quality?