I talked to the chief architect for
Black Dog LED for about 30 minutes the other day... he sold me on their stuff if I do end up going with that option.... talking to the tech guy was much better than talking to some salesman, and we went over the diodes they used, the nm spectrum including uv they were using (all 5w diodes with a range of about 10 spectrum colors)... one of the points he made was with theirs, there was no wattage spent on unused colors, and he swore the penetration has finally gotten up to PAR (heh heh heh) they look pretty good in my opinion if you're going the led route.... he said they quit doing veg lights because it was pointless and there were some studies he referenced showing that in cannabis specifically, there is some stress involved in a rapid drastic spectrum change (ie: switching a blue mh for red hps)... he said for veg, the light is raised up to achieve an 8' footprint, otherwise it covers a standard 4-5' square same as everything else... they seemed solid, and the guy knew the tech inside and throughout so it was a good conversation.