Well I just got off the phone with HTGSupply (and you guys are welcome to call them)

I asked the guy what is the absolute best lighting from start to finish, vegging to flowering. Would it be an LED setup or HID setup. And this is exactly what he said:

"The best system overall would be an HPS setup because you would get more lumen output, more intense light, better coverage, and better penetration throughout. Now if you were in a very small confined grow area, then LED would do fine overall I would rather stick with HPS, but side by side comparison the HPS system would have a better overall yield than that of the LED setup, and would take less time. The only downside to HPS would be the amount of heat that it generates." Exact words from the mouth of someone at HTGSupply.

Here is the phone number I called to get this answer:

1-866-710-GROW (4769)
High Tech Garden Supply

They offer both LED and HPS systems. So I trust his answer, you are welcome to call and ask them the same question.