I see a lot of members here use MARS, I think the price is fair, but the local hydro shop says they're no good... this may be because they want to sell another product I forget the name but the pricing is outrageous like 3 to for times the price for around the same wattage.. I dunno LED lighting is kind of confusing to me, I mean to try and compare units I have no idea
I couldn't be happier with my Mars light!!!