Hi, I stream a lot of shows from my AirMac (in my Office) to my Apple TV( in my living room roughly 5 feet away but separated by a wall). My MacAir and my Apple TV are both running on my Wifi Network (not connected via a Hard line). Occasionally when I'm streaming shows the video on my AirMac will play uninterrupted but there will be some Lag on my Apple TV. I am currently using the Verizon Modem/Router combo and was thinking about buying the latest version of either the Airport Extreme or Express because they both operate on dual band which should enhance the connection from my Mac Air to my Apple TV. Will upgrading to the Express or Extreme benefit the streaming quality when using airplay and if so which one would you suggest?