I m looking for a usb 7" monitors for my headrest that has the best video playback, that will be able to display my frontend(sd2). I use a xenarc 700tsv in the dash, but need monitors for the headrest for the kids. or just get two more 700tsv monitors for the headrest? I like xenarc quality vs other. Is there any other brand that has the same or better quality then them?