Well, this isn't do much an initiative to reduce squabbling in the back so much as it is a convenience for long journeys.
I bought the Toshiba SDP1400 from Richer sounds in the end. Does all I want it to do. Multi region and plays DVD-Rs so I'm plenty busy firing up DVDShrink making a few backups at the moment for the car.
Details at
http://tinyurl.com/53w4o