I admittedly haven't really followed or read this thread, but I think it's time to insert a stupid "what should I do?" question:
I have DirectTV. I also have a Tivo Series2 (I think) unit. What should I do? DirectTV offers a DVR unit for $100, then a rebate, then service for $5.99/mo (if I remember correctly). Tivo costs a bit more a month, or there's the lifetime membership. My concern there is what if Tivo croaks in a month? Do I lose that money? Alternatively, can I just hook up my Tivo unit, pay DirectTV the $5.99/mo and have anything work correctly? I suspect not.
What should I do?