First off, I really like these units and they play and look great just as long as you use the DVD player for each screen individually. The real disappointment comes into play when connecting the two units together to play the same video. The fact that the product uses analog connectivity and only comes with a 3 foot long AV cable is its downfall. Now, don't get me wrong, this may work out fine for you if you plan on attaching the screens on side by side headrests in the same row. But if you have a vehicle (such as a van), where there is the possiblity of someone tripping on this cable or, as in my particular install, you would like to have one screen in the middle row and the other in the rear row, then this is not even possible with this cable. The second and even more disppointing aspect of connecting the units is a result of this product relying on an analog connection. Because it is analog (and not digital), you will also need to accept picture degradation from the unit playing the DVD and second unit. While the picture quality isn't horrible, the picture quality difference between the player unit and receiver unit IS noticible (even with the 3 foot cable). And as you would imagine (with any analog connection), the longer the distance you send an analog signal the more the quality degrades. With this said, the solution which would make this product GREAT and more desireable would be if Philips redesigned this product to use HDMI connectivity between the screens.