I would recommend you Supersonic SC-409 7-inch Touchscreen DVD Car Stereo. I got the one for my car,recently from Overstock. They give good discounts as well. You can choose from other types of dsvd players too.

looking for a new portable dvd player for car, one that attaches to the back of the seat, preferably tablet style. The issue - I've gone thru two dvd players so far (one coby, the other toshiba), so I am not sure what the deals is. I do know I need a new one.
can someone recommend a new table style dvd that attaches easily to the back of the headrest? an 7-8.5inches would do.