Hi i got sylvania,phillips,ge 1000wts hps bulbs is 1 on these bulbs better than the other or thay all the same???
GE and Phillips are reputable companies so they show it in their quality products. You really can't go wrong with either one. Not sure about Sylvania though.
It's also important to know the lumens/lifespan specified by the manufacturer. All 3 companies make a good bulb, but if one bulb of the same wattage puts out more lumens, or has a longer projected life, I would lean toward that bulb. Eye Hortilux Bulbs typically have 5-10% more lumens than some other bulbs of the same wattage. My hydro shop offers a year gaurantee on EH lamps.