I want to purchase a overhead dvd 10-11 inch that will play mp4 movies from harddrive/sdcard. I have looked at specs on some but I want some personal experience. Because supposedly the farenheit model I have plays mp4 but it must be an updated verison. I did find one that says plays mp4's it has usb and sdcard but from reading it seems like it would only read a 4 gig sdcard.