Which TIVO will work for me?

SIAP, wasn't sure what the best way to search for this would be. And sorry if this is the incorrect forum to post it in but it seemed most appropriate.

So my situation is as follows. I have basic cable without a cable box. I get mostly analog channels but also some HD digital channels just by plugging directly into the coaxial cable.

So which TIVO model(s) will work for me?

Which TIVO will work for me?