I used to commute all winter long (~10km each way) with bright Busch & Mueller dyno lights. I had a sturmey-archer drum brake/dyno front hub on one bike and a high-end shimano hub on my long-distance bike. Both hubs were great at powering the B&M lights which have amazing optics that project the light onto the road surface rather than up into the air or drivers eyes. I used to use planet bike lights which work fine for being seen but the dyno lights mounted above the fork crown are far superior to anything on the handlebar for illuminating the road. If they're mounted with security bolts they are tougher to steal than most handlebar mounts too. 200$ is a bit steep but it'll get a pretty sweet set of lights and a high quality hub, especially from European online shops, particularly bike24.com

I know that the small weight of the dyno hub and slight drag of the hub never made a discernible difference to my commute times or even times on longer rides... other factors always took bigger bites out of my time, namely stop lights on my commute and weather factors on longer rides. I don't sweat a few pounds (water is heavy for e.g.) either way on a bike, especially riding in the winter with boots, gloves, heavy coat, etc. it's all a wash. I like the "set & forget" aspect of dynamo lights too, if you keep your bike in a secure garage or something you can just leave the switch on and have daytime running lights... the only reason I turn my off is to keep helpful people from telling me my lights were on.