Hey guys, first post. Been doing tons of reading though. I cannot wait to start my own grow thread on here! Finally got my card so I'm about to order the stuff for my grow. I'm going to use a 4x4 tent in a small room sectioned off in my basement. I want to try to grow 6-8 plants with a 600watt hps/mh setup from HTG: HTG Supply - Digital Greenhouse Ultimate 600 watt HPS & MH Grow Light For ventilation I will be getting a 4" 170cfm inline fan/carbon filter combo. My question is, on the light setup...would it be worth paying extra for the more expensive lights or are all lights about the same? Also, which reflector would be best? Do I need one that is air cooled? Does anyone have experience or wisdom they can share with me? Here are the options you can get on the bulbs/reflector: thanks!!!