Thats funny about the Disney set! I got one and the sound one one of the sets never worked, right out of the box. When I took it back to Target, they had a deal on the Audiovox set, it was $10 less that the Disney set, so I made out! I figure for 2 seperate players, I can go to the dollar tree and let the kids stick all the Mickey Stickers they want on it!
So that answers that question. I have the Audiovox 9 inch 2 screen set. I love that it has 2 seperate players, or can both play one movie. We've had it since before thanksgiving, and so far, so good. It worked great on our loooooong trip to Texas for Thanksgiving, my DD2 wanted to watch Tinkerbell and barbie, and no one else did. So I put in Barbie and gave her the headphones.
As far as 3 screens go, I have never seen a 3 screen. I have one set on the front row, and one on the back row.
I've also used Emerson brand (was great, after about 13 months, stopped reading disc. Might be an easy fix) and the cheapest one that target sells,
cheapo it was total JUNK! made it 2 hours into a 13 hour Disney Trip. For some reason when I bought it the low price outweighed the bad reviews...so I didn't give that one another shot!