Software For Backups And Transfers

Hi. I'm looking for Windows (7 and/or 10 ) software that will allow me to easily transfer large groups of shows to/from/between 3 different Tivos and a large pc back-up drive over ethernet. I'm guessing that Tivo Desktop Plus would allow me to do this, correct? Are there better alternatives available from 3rd parties? Also, would the software be able to show which shows are duplicates between the Tivos, and give me an easy way to eliminate them? I don't really have the need to watch the shows on my pc...

Any info would be great...

Thanks,

Rick