Sure gets confusing attempting to buy a new light. Some have warranties.. the price differences... gets annoying. :)
I do have a 400 HPS system which I am happy with.. I want more coverage. Considering a 1000 watt system. I see no value in electronic ballasts.. I see no warrantly on them.. and how often do electronic boards to AWOL.. often IMO.
Seems like.. ?... Sun Grow Lights are the only US manufacture.
Appears a switchable ballast is the way to go.. using MH staring out for growth.. [?].
The voice of experience is welcomed per comments... Thanks!