For illumination so others can see me I use PB blaze lights. They'd serve in a city environment where there are street lights so I can see but where I live and ride they'd be woefully inadequate. For the purpose of being able to see in the dark myself, as well as others seeing me, I use a pair of Dinotte 400 lights.

One handlebar mounted with long throw lenses installed and one helmet mounted with a short/wide lens installed. With both on high the once dark forest path is lit up.