Originally Posted by
veganbikes
I might take a look at the Planet Bike light.
FWIW, i have both the superflash (non-usb) and the turbo superflash (non-usb) and the Cygolite Hot shot is far brighter than both of these. The chart at the link below might be helpful.
The Best Bicycle Taillights of 2013 « Stack Exchange Bicycles Blog