FWIW, I replaced my 4W LED for another 6 W 15degree bulb. That makes a grand total of 1000 lm that are aimed along my route. I aimed them at about 15, 20 and 40 ft out. Very bright! Easily as bright as a car light.
__________________
"Why is there a hill after every meal, but not a meal after every hill?"
--Overheard on Grabaawr