I've owed a TiVo and now I use a Cox DVR. They'll both change the way you watch TV. The TiVo does make for a better DVR with the Suggestions feature and more intelligence, but the Cox one has two tuners and the ability to record HDTV. Myself I'm going to stick with the Cox DVR until TiVo has a model that has two tuners and HDTV capability (that's not a DirecTV model).
-Tim
