Their 69 and above are pretty fire controllers. The AI one is pretty new, only person I knew with one didn't get the light sensor as they were scared for the AI to run the lights...and a power flash had it messed up really bad, like the off-site stored settings did not sync back up. They got theirs at the end of last year though so they were fresh
The 69 and above really give you capabilities that are far beyond competitors right now. I like my vivosun controller but I have had something on the board blow out on the circuit that controls canopy fans. I would not be having this relaxed opinion if it was the lights or something and it had ruined a crop