I always wear helmet lights, front and rear, to be seen better. They show better in traffic -- they're high enough the lights aren't blocked by most vehicles. Blackburn 2'Fer lights are very lightweight USB rechargeables, can be set to red or white, blink or steady. I don't even notice them (and occasionally forget to turn 'em off when I'm off the bike).

For a front helmet light, I like the Vivo Bike Illuminati (or other version of the same light on Amazon). Also very lightweight, but more directional. Not bright enough to be a main light, but a good supplement to see wherever I look along the trail and roadside at night.

My new-to-me bike has center pull brakes, which somewhat limits options for mounting lights. After I re-install the fenders and front and rear racks that problem will be solved.

Meanwhile, I'm getting by with an old Bell saddle that has built-in lights (a horizontal row of fairly bright red LED blinkies). And a steady red taillight rigged up to the seat post. I borrowed the front reflector clamp from another bike to hold that light.

Those narrow strip lights look good for seat stays too. I might add a pair of those. I like the idea of using multiple lights to give drivers a better sense of perspective, speed and distance.