For my money and as a driver who also cycles, flashing lights win every time. They are different and so stand out and get spotted much much quicker and easier than a static light.
I have recently seen a few bikes running twin lights with just one flashing and this is a good idea as mentioned above for the riders benefit (seeing and being seen) but if you cycle in well lit areas and run just one light only, set it to flash!
For my money and as a driver who also cycles, flashing lights win every time. They are different and so stand out and get spotted much much quicker and easier than a static light.
I have recently seen a few bikes running twin lights with just one flashing and this is a good idea as mentioned above for the riders benefit (seeing and being seen) but if you cycle in well lit areas and run just one light only, set it to flash!