There is at least one review and multiple questions answered on Amazon that indicate that the 78 will work with my TV's. The remote that will get the most use will be in a home gym. So, the back light would never be necessary there. The other room is a guest bedroom that will only get use a few weeks per year, tops. Given the people who are most likely to be staying there, a backlight button is not something that they are particularly likely to ever press. Thanks for your help.