Watching a big game and need to use the restroom? Just hit pause, then "unpause" when you get back. Missed some dialogue because the kids were screaming? Just hit rewind and see it again. Remember I'm talking real time and live TV, not just what you've already recorded.
Also it's all digital. The recording quality is exactly as good as when you first watched it from the source ..... forever.
The ones that are designed for cable are OK, but IMO you're missing the boat if you're not using them with a 32 bit digital satellite signal. With a digital satellite signal there will NEVER be any snow, interference or static ever. You either get it or you don't.
Some cable companies are now hawking a "digital" signal. What they don't tell you is that it's a 16 bit signal as opposed a 32 bit signal from satellite. Like your video card, 16 bit allows several thousand colors, while 32 bit allows several million.