I used a display model earlier today at Best Buy (I preordered a 3G one but wanted to try it out for real. thought it might help satisfy my cravings. just made it worse! D=) Anyway: The sound was really weird on it. I played "Fireflies" video on the iPod and i could barely hear it. Then I tried Step Brothers and i could also barely hear it. had to put it up to my ear. Plants vs Zombies: Nope. Reuters: Nope. But then when i played Tap Tap whatever, i could hear it. And finally i tried a Nelly Furtado video and could hear it clear as day. So... Have any of you guys encountered any discrepancies in the volume from app to app? Or was the display model just faulty?