Price. I'd still have to have my PC running in order to share the signal with other devices over Media Center, but the initial cost would be way below building a new PC around the Ceton card. It's only 3 tuners versus Ceton's 4, but I can't foresee ever needing more than 3 active streams in this house. I may not go with any of this, though, if I decide the cable isn't going to be worth it to me.