Interesting, my analysis from last November is unchanged other than time-shifting and yet, emotionally, the availability of TiVo makes a huge impact. On the other hand, I am not sure that they would allow me to change my current TiVo lifetime subscription over to the TiVoHD, so I'd be facing another recurring monthly bill.
So it's HDTV ~$2500 + Tivo HD $300 + XBox 360 HD DVD Player $200 + monthly fee and neither Comedy Central nor AMC nor TCM broadcast in HD. Mmm.... temptation decreases ...