I have the three most powerful versions of this light; (3 bulb for road/gravel, 5+ bulb models on MTBs)
https://www.aliexpress.com/item/1005004744870560.htmlI’ve used the two largest next to each other on a ride and really couldn’t tell much difference in brightness, but the largest ones light seemed more hazy. They both last a couple hours which is enough for my MTB rides that last into the night or start before dawn. I only ever feel the need for a helmet light when we get to extremely fast/downhill sections. Their lumen rating is definitely a fairy tale, but they are very bright for the price/size. (I have a 12" LED light bar for night time dirtbike racing that is rated at just over 6200Lumen and its downright obnoxious in the woods and you don't feel like you're outrunning the available light until 60-70mph in the desert)
I dropped into a random night mtb ride in Florida last November and 2 other guys had the exact same 5bulb light. We had as much or more light than anyone else with lights costing hundreds more.
