The NiteRider Lumina 1100 (and likely the 1200 version) would be my pick for road focused or higher speed gravel rides as well as city cruising.
Niterider
The Riding Gravel Light Round-Up: Introduction
The Riding Gravel Light Round-Up: Introduction- by Grannygear with comments from Guitar Ted Gravel bike … The Riding Gravel Light Round-Up: IntroductionRead more