I'm using an AI Nano w/controller. Only 5 weeks old so still too new to tell you how good it is, but the corals have been reacting well and I can tune in the blues to get some nice sunrise/sunset color pop. This is my first try using LED's to keep coral so I don't have any comparison for LED's, but would almost say two would be needed for better coverage.
I'd be happy to answer any specific questions you have.