Unexpectedly, I now have both a brand new TivoHD and a brand new DCH3416. I turned in one of my 2 TWC DCT6412 DVR's today but the tech ended up replacing the 6412 I was planning to keep with a 3416. Unfortunately, this same tech didn't stick around to see if the Tivo cablecard install was successful and it appears the 2nd card isn't working at all and the 1st one is only picking up a few channels. I guess I'll be reading the forum to see if the issue on the first card is something that might be fixable without another truck roll. In the meantime, I have to admit, the HD picture on the 3416 is gorgeous... hopefully the Tivo will be similar when I get it going because the TWC interface still hasn't improved.