It really depends on the use it is intended for and how much light pollution is around. If it's dark 300 is more than enough. But in a well lit parking lot for example a shadow at 50 yards will still appear dark with "only" 300 lumens.
My EDC lights are 500 (max) and 110 (max). I keep a 650 lumen number in my truck to shine into manholes and such in daylight because the beam is fairly throwey.
My EDC lights are 500 (max) and 110 (max). I keep a 650 lumen number in my truck to shine into manholes and such in daylight because the beam is fairly throwey.