Unfortunately, you cannot get a TiVo that receives the new D* HD channels. Just the older channels delivered in MPEG-2. I miss several of the TiVo features, but once you get used to the new HD DVRs, they aren't so bad. And D* seems to upgrading the capability of the new DVRs pretty regularly. The biggest problem with the D* DVRs is documentation. Here is a good link to help the change from TiVo to D* DVR:
http://www.dbstalk.com/showthread.php?t=72648
Still, I really, really miss the TiVo wish list. D* has something sorta, kinda similar but not nearly as good, IMHO...