Headrest DVD players - recommendations

[allanmb]

My youngest son is now at the age where he needs some entertainment in the car during long journeys. I currently have a single headrest DVD player which has worked wonders for the eldest but now I need to have two units. I was hoping to get some recommendations for models that would allow the two players to play different DVDs simultaneously. I bought a set off eBay a few months back which were complete headrest replacements however these didnt fit will and rattled very slightly in the seat so they had to go back. I don't mind having the players strapped on to the headrests and I don't mind using the cigarette lighter to power the units however if I could get away from both of these constraints I would be very happy. My main issue would be price though. I am hoping to do this under £200 if possible. Any suggestions?
Thanks
Allan

[DemonFire]

If you're comfortable converting your DVDs to MP4 files (I use Handbrake) then you may want instead to look at the likes of the Nexus 7 tablet. It fits your price point and would be good for 10+ hours of programs even without hooking it up to power. With a little tweaking you should be able to get over 20 hours of different programs on the 16 GB unit.