Do you really need pure sine wave for your tv's or are you happy with your modified sine wave inverter. My 750 Tripp lite inverter took a dump and now need to replace it. BTW it was not pure sine wave...
As Piano stated the OP said current unit is dead they have to buy something, now is the time. With PSW you will never have to worry about what you plug in.
Our coach has a MSW and it has worked fine including powering HP/Compaq laptops :B but if it dies and I have to spend the money it will be for a PSW, same if I have to replace it due to capacity needs.