About car DVD player
 

Just wanted to know everyone's thoughts as what would be best. A
headrest car DVD player, which is not permanent, easy to install, but is
easy to steal. Or DVD overhead, which is permanent, but blocks rear
view mirror and maybe more involved to install, but just looks better
and for all the kids to watch on one screen.

It's a matter of preference. Both are equally easy to steal I'd say. Individual screens gives the kids the freedom to watch different things. A bigger roof mount screen works best in a bigger vehicle.