FIOS to TIVO

Thinking of switching to Tivo from FIOS Quantum.

Right now I have the Main Media Server box, and 3 Mini type boxes.

Overall not a bad experience.

I'm wanting to get a Roamio Plus and 3 Minis.

Has anyone switched over and whats your take vs FIOS?

Also a big feature I want to make sure Tivo has is if I record any TV show, HBO movie ect on the Tivo, I can either stream that show to my iPad when I'm out of town or even Download that movie to my iPad and watch it without an internet connection, like on a plane.

This download feature to my iPad is a main reason I want to switch, so I just want to make sure this feature works without any other 3rd part software.

Finally, I understand I need just one Cable Card from Verizon, one CC will give my Roamio the ability to record multiple shows??

And then there is the question of monthly vs lifetime.

I've done the math and spend about $650 a year in FIOS rental fees, and if I buy the Tivo boxes and lifetime it would take me about 2.4 years to break even. But since these Roamio boxes are a year old I'm not sure if I will hang on to them past 2 plus years.

Thanks and let me know.