This message is not tended to offen any one, if you feel are you offened, please take a deep breath ... and have a drink.
I'll need to take a breath to address all of these...
Think I can do without the drink though. I'm also not trying to offend (but do note that this thread did solicit info specifically on 150 DE), so...
Are you running 150 W HQI + T5 on your current tank after 10+ years in the hobby?
Yes... multiple tanks. I also run T5, and some NO fluoros.
It's look like you are a strong believer on 150W HQI.
Well, I believe strongly that good DE systems have been demonstrated to produce more usable light for less power (resulting in less heat) than any other available lighting system. T5 (again, a well designed system, not just T5's w/ an aluminum foil refelctor) might be a better choice in some applications though.
Are you recommend to some one base on your 10+ years in the hobby that they should/ideally get 150W HQI ?
Nope. But if someone is thinking of going MH, they should at least make an informed comparison. DE MH is, IMHO, the best light source for reef aquaria. Others might place values that are different than mine on the factors that lead me to that conclusion. Some (MoonPod on RC, for example, until he recently went DE) think that glitter lines are distracting, for instance. Others might prefer the flexibility in apparent light color that they can get from arrays of several fluoros.
How many dozen of 175W and 250W available in the market?
I'm not sure. I'm also not sure why anyone would really care, unless they were trying to buy one of each or test to find the best one.
Also, if one were shopping for a car (of which many dozens of makes and models are available) instead of for reef lighting, would they shop for the one that has the greatest market share, or for the one that best meets their needs within their price range? If you could afford either, would you prefer a Boxter or a Beatle?
There is no significant cost different for 150W HQI and 250W HQI.
Agreed, but the poster asked about 150. I do encourage people who believe that they will end up wanting large tanks, "high light" corals and clams to start w/ 250 DE. I would argue that after a couple of years, there's no significant difference in cost per light between 150 DE and 250 SE either though...
How many places sell 150W HQI equidment? and cost?
How many places sell 175W Mogul equidments? and cost?
How many places sell 250W HQI/Mogul equidment? and cost?
What are the percentage?
Again, I'm not sure exactly, but enough (dozens of vendors, including all of the major online reef stores), and don't see how it's relevant. Certainly many times more places than sell T5.
How many places sell SeaClones, as compared to Euro-Reefs?
How many SeaClones are sold in comparison to Euro-Reefs?
Is there any links/references that you can provide? please share the well
To Sanjay's studies, to non-hobby comparisons of the performance of various lighting technologies, to vendors that sell DE systems, etc.?
Krusk, I , again, didn't mean to offend anyone. My "I'm not selling anything" disclaimer was honestly and solely referring to my own objectivity, and was mostly a figure of speech meant to convey that.