I know a lot of people were doubtful about leds when they first came into the hobby, so I hear, but after buying sps that had been under metal halides and putting them in my tank, they have 100% more color to them, and the rest of the corals seem to flourish under them as well.
What size tank are you thinking of for this Brad? for a 4' I cant see why you couldnt get away with 2 AI's as they cover a 24x24x24ish area with stock optics, with the wider ones I would imagine if hung at a respective height you could probably get close to 30x30x30 spread with a higher intensity. same thing for radions (aside from the optics part, I dont believe they have any)
