I bought a Panasonic LA95 Portable DVD player in Jan for our trip in March to WDW.
It was great. I almost went with the lower priced dvd players like Audiovox, Mytek, Initial, but after reasearch found that these overheated and stopped working. Sure if you buy them from like
Walmart, Circuit City, you can return them and get a new one, but I really didnt want to go searching for a store on my drive down there. Some of the lower priced ones have issues on the screens too. In sunlight you cant see them as well. No problem with this one.
Mine was just the DVD player itself. Has a 9 inch screen which is great. It also came with plugs to hook into the TV. No car adaptor, but I got one on ebay for 39.95. Much cheaper than the panasonic one that they wanted for 149.00. I also purchased a carrying case and a head phone spliter (so two people can listen to the same thing). Case came with straps to mount hanging between seats, on seat or straped to center console) We put it on the center console and had no problems viewing from either side of vehical. If you own a car with a tape deck, buy the converter so that you can listen to the movie through the Car Stereo system. Listening to movies helped me..It plugs into the headphone out and is in the shape of a cassette tape. If you dont have a tape deck in your car, they make one that will broadcast on an FM station of your choosing. Tape deck accessory is about 20.00. The FM broadcaster is like 35.00
I bought mine for 699, but got a rebate of 75.00 on it so it was down to 624.99. About a month later, I saw it again at Circuit city (where I bought it) for 524.00 I thought this was a misprint so I took it to the customer service center. They credited me the 100 bucks and gave me an additional 10% back.
I would choose a name brand and not go anything less than 7inches viewable screen. Wouldnt choose a Laptop as someone else has suggested. Granted it is a bigger screen, but its hard to strap down and could become a projectile if there was an accident.
Good luck in your decision...