LED may very well be the way of the future,,, but the future is not here yet.
From my test (and expense),,,, not yet.
Definately has potential,, but simply the mix is not yet working for me. HPS still rules. However, CMH is a hard challenger. LED may be 4th choice. Yes, I put CFL ahead for trichs development and actual felt / smelt satisfaction for me and others.
VERY possible I'm nort up to snuff on the differences of LED,, basicly, in the same boat as others though.
Promising,, just not there yet.