The specs don't look like that has an OTA tuner, right? That would be the easiest/fastest way to get HD.

I have the HD*Tivo and highly recommend it, if you can swallow the price. There are some issues w/ HDMI, but I use DVI and have had not problems at all. Don't think you need to be convinced on Tivo.

Some friends have the Comcast DVR, reviews are mixed, but your cabling will be easier to manager. Tivo still has that beat w/ ease of use. Voom's dead.