So I am one year in and really have no complaints. Like the other comments, I still have a number of “always on” and “unknow”, but these represent less than 20% of my typical energy usage. I am also still getting periodic new device detected, which is whittling these two groups.
Prior to installing Sense, I was using a whole house detector (TED) in parallel with a “KilloWatt” portable device. I do find the Sense to be more practical and provides me with more usable data…