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The advantages of LED are better as you venture to the areas with higher power cost. Here in Iowa electric is 8.1 cents/kWh for the first 1000 then 7.2 after that. In CA it's like 40 cents/kWh.
As far as green / environmentally friendly, that's marketing right now. There's no proof that LEDs are better for the environment. DOE had commissioned a big study via Cornell or another big U and fired then years later (recently) after they couldn't deliver such a report (regarding processes used in manufacturing and their impact on the environment). CFLs have little mercury, etc in them anymore. So the environmental impact of throwing away CFLs is becoming less relevant.
Light distribution and spectrum tuning are the keys. Use of 1W vs 3W LEDs will hopefully solve the distribution issues.
The biggest issue is heat sinking. These fixtures have fans on the back that push air at the heat sink, so you have a potential corrosion issue (which has happened).
We have such a specific application that no one makes anything that works "perfect"...
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