Advertisements Currently looking for another TiVo as a gift for my son who is moving out. He's known nothing but TiVo for his entire life. A couple of questions... What is the difference between the 3TB Roamio units? Old version vs what exactly? I'd like to get one that can do ota or cable without adding a cable card adapter. He's moving to an area where ota should be plentiful but I'd like to make sure he's able to use it as he sees fit. I know that the "Pro" is cable only as it has six tuners but am still curious about the "Old Version" distinction as I'm also looking to replace my XL4 as the Bolt doesn't do component. I honestly think that the Roamio, for my needs, is a better fit but maybe I'm not giving enough credit to the Bolt. I've owned, at one time or another, every series made by TiVo. Thanks for your help and your educated opinions.