Well that was a heck of a read! Good thing I'm at work : )
I have ran t5's, MH's and LED's for years. After 5yrs of LED's I am back to T5's and happier I've been the last 5yrs. MH's are excellent lights for sps and the best imo. My reason to not run mh's is mostly due to the amp's they pull and evaporation. You can control the heat pretty easily with fans, and for folks like myself in Indiana the added heat isn't a bad thing in the wintertime. One thing I haven't seen mentioned is everyone, or a few are arguing about the efficient LED, but my heater kicked on much much more with the LED system vs MH's. The chart I have seen in this article is pretty humorous as it does not tell the tale as there are way to many things to consider, not to mention spread of led vs mh's and the fact no one will keep their fixture for 50,000hrs
Hopefully this thread gets back on topic and some more mh people will post some pics