i tried to find my last post on this, but couldn't locate it..
basically, i know of 3 single-din flip-up screen companies:
xenarc: used to have a lot of issues with the video cable between the unit and screen breaking-- they claimed they fixed it, but last i heard, they still had issues. lately, i have not heard any problems, but i also have not heard of any success stories..
lilliput: they used to have a lot of issues with the plastic gears that motorized the display up/down breaking. the new screens now have metal gears instead of plastic, though again, there are zero good/bad reviews on them..
revosys: they are a more recent introduction to the market. i have a hunch that most of their stuff is rebranded chinese junk, but again, zero reviews, so i don't have anything to encourage/discourage their brand..