Never heard of it. I use all Lumatek Ballasts and have been using this brand for may years with no failure rates. I've seen many cheap ballasts come and go with massive failure rates. You get what you pay for.
I was wondering about the lumatek ballast but everyone says to go with magnetic because they last maybe 3-5 years at the most and with magnetic you can repair them yourself. I have been asking around to see what I should get as this will be my first time doing indoor at the end of the year.