The Petzl NAO RL is light, incredibly well balanced, has a decent beam, amazing battery life, and all-in-all is hard to find fault with.
Read more here: https://www.ukclimbing.com/gear/camping/lighting/performance_headtorches_-_petzl_nao_rl_silva_free_and_black_diamond_distance_1500-15561
Watch the video: https://www.ukclimbing.com/videos/play.php?i=6266