Except i really don't want to spend $799 on a TiVo.
And then have to rent two CableCards.
My SA 8300HD does just fine...i can record two HD shows and watch a third previously recorded (or one of the recordings live), for under $10 a month.
My reason for wanting TiVo back in the day was to install a NIC and rip quality recordings off of the TiVo's HD. With the 8300HD and FireWire - I can do that now.
It's much less than $799 if you look around. It can be had now for $599 or maybe less.