Well aside from the longevity and efficiency....LEDs have yet to penetrate and build buds like HPS does....

Forget about an A/C....I mean A/C is good to have but if you want to run CO2, in a sealed room, water cooled lighting is the way to go.... Get a chiller with the equipment that goes with....and temps will be a breeze to handle....

Since you say that money isn't a prob....get both LEDs and HPS HIDs.... After a couple grows....let us know which lamps you'll be putting up for sale.... Personally....I'd go with the proven and tried method of lighting....not the still in development period method....But that's just me....

CGI::::::
CanGroIt Reviewed by CanGroIt on . Several LED'S vs. MH + HPS Together? Alright, so I plan on building a decent sized grow room. Planning on spending around $15k for lights, CO2, air conditioner, etc. One of the biggest things I keep researching and going over in my head is the types of lights to use. I first thought of just using a couple 1,000w HPS's, then I thought of mixing a 1,000w MH with mayyybe 2 1,000w HPS's. Now I'm reading more about LED's and they seem to have a lot going for them as well. A few things will possibly factor into helping with my Rating: 5