Originally Posted by
reidconti
I highly recommend getting something with a good cutoff. Running an IQ-X off my hub generator now, the light output is simply astounding. If I put my Planet Bike "2 watt" LED headlight on high, and point it towards the road, I can't even tell it's on because it gets lost in the B&M beam. Even if I point the Planet Bike light level (so it's blinding to oncoming traffic since it has no cutoff unlike the B&M), you STILL cannot see the Planet Bike light because there's not enough above level to reflect off of.
A light with a good cutoff isn't blinding AND provides far more illumination.
Actually, I have the B&M Cyo Premium, which is the standard I use to measure my battery lights. I find that the beam of the battery lights mostly gets lost in the field of the B&M light, but mostly because the battery light beam is so unfocused. You don't really notice it until you get somewhere that is truly dark, all of the NYC streets are so well lit that it is hard to tell sometimes.