The way I understand it, Fios is basically the same as cable TV except that it uses fiber to get to your home rather than coaxial cable. The Fios set top boxes have the same capabilities as cable TV boxes. There are boxes with two tuners in them, but no boxes with three tuners. So with each box, you can watch one program and record a second program, or you can record two different programs. So with three set top DVRs you can record six programs. AT&T Uverse is technically quite different, although a typical customer might not notice the difference.