To subscribe to a thread, click on thread tools and then subscribe to thread. I was crunched for time and money , so I ordered another GE from HTG and it came 2 days later! As I slowly expand/upgrade, I will be adding a Phillips 330 to replace the 3 150w HPS's I am currently using in another chamber. I am going to order the ballast and bulb separately as most of the retailers I come across want $300+ for a complete system. It looks like I can put one together for about $200 which is what I paid for the GE's. Its so weird... the light looks completely white, but it is a well-balanced spectrum, and the plants just totally LOVE it. Looking at the side-by-side comparison, the Phillips has the better spectrum, but the GE has WAY more lumens, a longer life and more IR/UV. I am still eager to try the Phillips, I just had to use another GE this go-round. Again, I WILL vouche for the GE CMH. It is a legit grow-light, and FAR superior to a standard HPS. My Blueberry girls went from a 10-week plant to a 9-week plant and became more potent as well. Trichome production is out of this world! If the Phillips truly IS better, then I am super-pumped to see what it does... but it will have to wait a few months.