I do not work for a lighting company, I just did months of reading various forums and reef based websites, and when it came time to spend my money, I went with the AquaIllumination Sol Super Blues
I haven't seen anything available yet that has made me regret my decision, however I think the new LED units from EcoTech Marine will give the AI's a run for their money. To me, the money was well spent.
I paid $1200 for a MH / T5 fixture from Foster and Smith when my tank was setup on sale(the retail price was $1400) , and the LED's from AI for the same tank were $1500 or so. I just wish the price on the LEDs had come down before I bought my first lighting fixture, I would have had LED's from the start. (When my tank was set up, you needed more of the AI units for the same coverage, and it would have cost me $3k - which is why I went with MH/T5 to start)