Not a marketing rep for Niterider, but they are great lights. I have the 350 and for me it is plenty. Had it a couple years and either the battery or charger went South. I called Niterider and they said send it in. Week or so later I had working unit--no charge. Great customer service--I wonder if the cheaper ones offer that? I also have Nitreider tailights and they have worked flawlessly and battery life is very good.