I'm taking the liberty of posting these links to a video and a text review of the S3 that PC Magazine has released online in the past few days:
By Robert Heron
TiVo wasn't the first company to create a hard drive–based digital video recorder, but it garnered devoutly loyal owners by crafting set-top boxes that were reliable, easy to use, and even hacker-friendly. The TiVo Series3 HD Digital Media Recorder ($799.99 list) is the high-definition successor to the company's popular Series2 DVR, and this newest member of the TiVo family expands upon its predecessor's offerings with more storage and more ways of recording what you want when you want. But this premium-priced DVR isn't for everyone, and I was a little disappointed to find some features copied verbatim from the standard-definition TiVos without consideration for how they would look when viewed in HD—an environment the Series3 was specifically designed to support.
I hope I'm not violating anybody's copyright paranoia posting those links and that excerpt here. I think it might generate some discussion.