I have two of these screens (http://linitx.com/product/11079), they are fantastic screens but I have replaced them with Flytouch3 tablets as we have multiple cars which the tablets can be transferred over to without any drama.
Although they aren't transfective, I haven't had any problems with viewing the screens in the summer when they were mounted to headrests. The have a great image, plenty of features and overall a nicely put together product.
Come boxed, with cables and power packs etc.
Looking for £110 each + £10 next day delivery or £220 the pair including next day delivery. Which means you'll be saving over £80!