Can anyone offer a cost/benefit comparison of cable w/Tivo and satellite (DISH DVR) services?

I have two more days to take a bundle offer from the company that provides my cable Internet service.

But I have questions still, and there are probably some answers I don’t know to ask for. I have a non-HD Dish agreement (expired) with the medium number of channels, and two receivers (one of which I don’t use and need to return); that service runs about $82 a month because I don’t do pay-per-view.