I looked into one of these they are expensive, around 1,000.00 bucks then have to pay for install to make it look good. What I did was buy personal DVD players for my two kids they can watch what they want to then, Sam's Club $179.00 each Polaroid brand. they have had them for about two years know use them all the time even at home they will use them to play music etc.
Broome101
2005 F350 PSD,SRW,CC,LB, King Ranch, 4x4
2005 3685FL
http://www.picturetrail.com/broome101