I'm reading up on lighting and came across this handy chart http://www.eleekinc.com/eleekchart.pdf Now... here's my question. Everybody jocks MH/HPS... but T5s are literally 50% more "efficient" (lumens/watt). So if you're rocking a 400w HPS over 3 plants... you'll get the exact same output from 250w of T5's. So... what's the tradeoff? I know fluorescents "drop off" brightness more quickly, but they're MUCH cooler and can run just a few inches away from plants. Is the only upside to HPS that you can throw a single light at the top and take care of 90% of your lighting needs, vs needing to monitor t5's, keep them constantly close/adjusted, etc? And obviously the top of the plant is but a small amount of the leaves' surface area, a majority of that light will travel not 2 inches but 8-12" before absorbed on the outer leaves... Just working thru the pros/cons in my head, please feel free to chime in!