Okay so I remembering reading somewhere a long time ago that alot of people swear by hortilux bulbs and would never use anything else. I have never used anything but and will swear by em too.
However, something I just read, in the latest High Times Master Growers Guide in an article about the latest lighting, that there are new bulbs designed specifically for digital ballasts, and how the all previously manufactured models (which Eye Hortilux falls into this category)ARE NOT designed for digital ballast and burn out early and what not. They proceded to hype SunPulse as innovators in the field w/ the first bulbs designed for the higher frequency of digital ballasts or something like that. I think thats also why like nexgen and lumatek are selling their own bulbs now but hey idk
Until a more definite answer is reached I will continue to put my faith in the wonderful spectrum Eye provides me
also by the way:
plantlightinghydroponics.com has the knockout prices on Eye Hortilux...always down to save a buck
They stopped selling Hortilux because Hortilux didnt like how low their pricing was ... wtf ?