Only draw back with this and other DVR systems (stand alone, PC or MAC based) lacking Cable Card compatibility, is it lacks cable card compatibility.
Not much worth recording is sent clear QAM, at least not on my local Comcast cable system. Local networks, (ABC, FOX, NBC) and a hand full of shopping channels, that's about it.
The cable companies are using the broadcast TV digital conversion as a reason to remove analog channels from the cable system too. Something to think about as this coming February is the deadline.
Take another look at Tivo, it's worth it. Watch for special deals around the holidays and you can get a new Tivo with lifetime subscription for a pretty good price.