Welcome to my rear tail light shootout (sorry to be missing Mech's bull). All lights with fresh batteries, Canon EOS 5D, 24-105L lens @40mm, ISO 400, manual exposure, 1.3 seconds @ f4.0, Raw, minimal adjustments (resize, smart sharpen) same settings for all three shots.
Planet Bike Superflash
Dinotte Rear Tail Light
Gee ... ummm ... do we have a clear winner? #1 Dinotte, Distant #2 Superflash, #3 LD1000
Since the first shot got blown out by the Dinotte, I reshot using different exposure, 0.8sec @f4.
So, big difference ... yes?