This is a personal story, this is what I did. The future is here, but it's not for everyone. There is a shift happening, beyond the channel guide. The younger generations will get this right away, where the older generations might never be ok with it. That's not a bad thing, but it's where things are headed.
For a few years now, we've insisted on using TiVo boxes on every residential job we did. It made sense back then for a few reasons, but it makes even more sense today. Not only is it easier, and more reliable, but now it will actually save you money. Less money in the cable companies pocket is always a good thing.