I recently replaced three Series 3 boxes with a Roamio Pro and two Minis. Since I pad all of my recordings, I tend to utilize more tuners than most people. I just checked the "To Do" List", and it looks like my machine will be using 5 tuners at once tonight. During this time, I won't even be able to stream live TV to one of the Minis. I guess six tuners isn't as many as I first thought.