This may not be a compelling reason for the Die-hard Tivo fan, but there is no fee for the guide data. Over time, that could add up to a decent savings. Also, according to their website, the hardware is HDMI Ver. 1.3b. They also claim 1080p recording, though I don't know what's available in 1080p on Cable. Only the Sats have "1080p".

#18,Now I am not ruling out the possibility of 1080p for HD-DVD, I just can't help but wonder what length of the 1080p movie will be on a 15gig HD-DVD disc. 20 monutes? Conveniently, your link that says so does not work.

I think what's happening here is normal. There are fanboys who prefer one format to the other (#3 MCEPAT and his idiotic bunch who believe that HD-DVD discs can play in current red laser DVD players).
While we all remember HP pulling it's exclusive support for Blu-Ray because of iHD and Managed Mandatory Copy, we forget that the Blu-Ray group added Managed Copy but stayed with Java for interactivity, which pissed off Microsoft to go in the other direction.
Tosibba has TV sets capable of displaying 1080p images. HD-DVD is only capable of 1080i, and the last time I checked, 720p and 1080i is what's on TV. Now call me crazy, but is that an admission on the part of Toshiba that 1080p (which is a standard feature of Blu-Ray) is better?
Many years ago, Bill Gates said something along the lines of the average computer owner needing no more than 1gig of memory. Is this him being shortsighted again or maybe he does not care who wins?
In all interviews, Bill Gates, has stated his belief that the PC should be an integral part of the Digital Home, facilitating downloads, copying and transfers of content around the house and on the internet. My personal opinion is that even he knows that Blu-Ray is superior to HD-DVD. He also knows that even the support of Microsoft will not make it better. It will, however cause enough of a format war to make both formats fail, just like SACD and DVD Audio.
Realize that prior to Microsoft throwing it's weight behind HD-DVD, that format was on it's way to the graveyard. Then Microsoft exerted enough power to bring HP along.
Until both parties make it to the retail stores, all we have is specs, and they give the lead to Blu-Ray. I dont know about you, but 1080p, Managed Mandatory Copy, Java interactivity, 200gig(max) capacity, Playstation 3 compatibility and a host of other features I can't list here make the Blu-Ray my choice.