You know the thing that I love? Fighting with the dropped solar input from the SolarX4 going to the Apex300 and trying to move through updates. Because the X4 ties directly into the last of the six batteries on this system, you have to tear everything apart and update every single battery separate! Then, when you find out that the update screwed up your system by allowing 80 to 90 watts to trickle from the grid ( means you absolutely have to be plugged in and have grid power ). They finally decide you need to reverse the update because the first problem you could manage with remote automation ( remote kill the solar, Apex AC out ) then restart the unit remotely. You end up moving those seven units about four to five times, only to be right back where you were at before. I am exhausted from the back and forth.