Interesting discussion. My head and tail lights are good, and I was also reviewing options. I decided not to use passive reflective tape for the sides of the bike and the right cross/left cross problems. Instead decided to upgrade my side lights from simple cateye 150 to the much stronger LD-610. It comes with white lens, but the LED lights are actually red. This is perfect. The white will better match paint color and the red will stand out at night.
Let us all know what your experiences and evaluation of this light is after a about a month of testing.