Good that we have a much better choice of lighting at lower cost than 20 years ago. Lets us build up a system for particular situations.

My environment is 30-45 mph posted, minimal street lighting.

I have a number of LED red lights but I can’t remember all the models and powers. The two brightest have a bright to dim cycle over about 3 seconds (surge?) that I prefer to blinking. It’s less annoying when I observe it.

I consider my rear-facing helmet-mount the most important. I only turn it on when I take the lane or am concerned about the situation behind me. In addition to saving power, reaching back and turning it on changes the visual scene which will help draw attention to my presence.

I then have a seat post and a light looking back on each pannier. I usually just use the seat post light on “surge” but use the pannier mounts for higher-risk situations or if the seat post battery might run out.

I wear reflective ankle bands at night but they are obscured to the rear by my panniers.