One of my Wife's online friends from WI is into saltwater reefing. She directed me to a member of her club that builds LED lighting systems; she is using it on her system. What I have seen so far is promising. I'm in the process of getting more details for my own forthcoming lighting needs. When I get more details I'll ask the guy if I can pass on details here.
He offers different sizes, power levels, dimmers, etc. I'll let you know when I find out more specifics.
Forgot to mention; he does this semi-professionally. He has gotten to the point where they are manufactured for him, to his specs. He does a monthly group buy.