Still really haven't seen an impressive grow with led. I myself would be skeptical of them. Here is my opinion why. Well first like I said where are all the awesome journals with results? I thought that is was counted at the end of the day? The initial cost is crazy, but I guess if you have and you want to try go for it. I don't know how new of a technology this is in regards to the horticulture industry, sorry I don't care so I'm not looking. What I do know for sure I know from the aquarium industry. Whats the aquarium industry have to with this? Well I'm a reefer two-fold. Full blown reef aquarium here, nearly all the coral I keep contain a symbiotic algae. I run Metal halide. I have had some led moon light, guess what they weren't that cheap and about after a year there was a noticeable decrease in light intensity. Ok maybe they had cheap heat sinks or something, fine. About three years ago 4 and 6 foot led bars were introduced to the industry and basically they are/were (not sure they still make them something about patent infringement)marketed the with the same arguments I'm hearing here. If I remember correctly they started around 2500. I frequent a lot of marine forums and the same bickering went on there, one difference it quit a long time ago. No big claims being made by anyone that's not hocking them. As for the ten year claim on bulb life, do know anyone that has run a set for ten years, or have you yourself? If something does fail have you seen how expensive parts are, they aren't cheap and are you going to fix your problems? I just don't know, but like I said just my opinion and you know what they say, but please feel free to PROVE me wrong. Oh, by the way...
prove
 
 /pruv/
Show Spelled [proov]
Show IPA verb,proved, proved or prov·en, prov·ing.
verb (used with object)1.to establish the truth or genuineness of, as by evidence or argument: to prove one's claim.
2.Law. to establish the authenticity or validity of (a will); probate.
3.to give demonstration of by action.
4.to subject to a test, experiment, comparison, analysis, or the like, to determine quality, amount, acceptability, characteristics,etc.: to prove ore.
5.to show (oneself) to have the character or ability expected of one, esp. through one's actions.