I have to say i love my Super HPS bulb, from everyone ive talked to about them they all say they work great for veg and flower, the Super HPS has more blue and white spectrum in it compared to your normal HPS bulb, i bought the cheap 135 dollar ebay kit with dimmable ballast and 400watt S-HPS and i have to say so far so good, its not loud, its not to hot, granted im new to growing weed but i use this light to grow Anaheim Hot Peppers also and they love it, and as of these last 3 weeks my weed plants have really loved it.