Bike lights for visibility

Thanks for the suggestions, but I’m pretty dead-set on not just strapping a standard flashlight to my bars and calling it a day. I know reflectors are important as well, but the wide visibility is the main selling point for me.

True, but I don’t want to have to keep track of a different battery and on/off switch for my headlight, tail-light, left hand, and right hand every time I try to ride to work.