Ok I sounded extreme in saying 'longest beam'. I meant among the bright, good quality bike headlights that you know of, which have relatively longer beam. So hope that sounds more reasonable now. I'd be interested in comparison to the so-called MagicShine clone, the Chinese-made $20 CREE headlight that many are familiar with, 'cause that's the one I usually use and the beam is not too bad when on high.