Here is what I did with mine
I got it off eBay for 200ish. It's an Audiovox 12v unit, 10", model D1020. They are still available there. It does have a walwart for the 120v option, I use both.
I did not like the onboard audio, so I took it apart and hard wired in my own speaks. Unfortunately, it did not have an extension speaker option.
I am not much of a video fanatic, and I got this because it plays CDs as well as DVDs, so I have all in one.
Picture is to my tastes and it certainly takes up no space.