What's the difference between TiVo Series 1 and Tivo Series 2?

I'm baffled at which of the three series to buy, all are 720p. What are the differences? and is it worth the price difference for the more expensive series?

I'm just trying to find the line of continuity here. I know that Uncanny X-Men is the original series. However, this just makes me wonder where does the comic series plainly titled "X-Men" comes from. Is it just a separate story line similar...

Just wondering what the difference between the BMW series are, is it that a series 7 is better than a series 1, and what sort of difference are we talking about?

Can someone please explain the difference in connecting something in series and in parallel. For example solar cells what would connecting them in series do, compared to connecting them in parallel? Thank You.

what is the difference between the 3 series, the 5 series ect.. ?

and the dvr they sell at directv? can a tivo be used with directv?

What should I do with my old SD Tivo Series 2 box now that I've gone to HD DirecTV? I miss pyTivoX! I was a huge Tivo fan boy, but after switching to HD, and many problems with my cable provider not working with my Tivo Premiere, I finally gave up on...

I have a couple of questions on the early series 1 Tivo. I have no cable and do not want to get it,can I use the tivo with out it, I only have regular TV. I also do not want to get a Tivo subscription. Can I watch one show and record another on the series...

SlingFilter: I've got the Slingbox. I've got the Tivo. Will I be able to sling in HD? Electronics wizards inquire within! I just bought a Slingbox Pro and set it up. Its amazing. I love the ability to stream TV to my T-Mobile Dash wherever I can pick...