Why can't a person just buy a flat screen tv (ac) use a converter rather than the dc option. It would seem to me that it would be a lot easier to replace and less expensive if it ever went bad I would have to go to a rv dealer. Since small flat screens are under $200.00 Would this not be a good option and then use a car dvd player? Anyone done this. I am new to forumn and in the process of ordering my 550. Thank you