On the bike Fenix BC30R, 1,000 lumens for 2+ hours and the top of the beam is flat for road riding
https://www.fenixlighting.com/produc...ix-bike-light/
On my head I wear a Fenix HL55 which has been discontinued, but the replacement looks even better
https://www.fenixlighting.com/produc...able-headlamp/
If you ride in fog a light on your head is not effective, it bounces back, but any other time having both lights is great. Reasonably priced too