My experience: I used Hydra on my Roamio for over a month. Did not find it user friendly as it made TiVo prior functions for me cumbersome and aggravating (even though I regard myself as technically capable). I had hoped to get used to it, but ultimately I went through the hassle of backing up almost 2TB of programming to my PC, downgrading, and uploading he saved shows again. Much happier now. Would be very leery of Hydra (even with fixes and improvements in the future).