One of my top 5 lights is a Olight. It’s a old M18 Maverick. Super simple dual switch light. Easy to open so it has a better emitter now. Only 3 modes with a hidden strobe and 500L max. Most of the time that is more than enough. Works forever it seems on a MJ1. Has held up well. Don’t really own enough of them to talk about longevity or customer service.