I use a B&M Ixon Premium battery light. Lasts 5 hours on full beam and takes rechargeable AAs, so it’s ideal for overnight rides.
I keep looking into getting one of these, as I hate the idea of dazzling oncoming traffic…
For the light output they seem quite expensive, given what the ‘cheap’ lights cost. But, I suppose if all of that light is going on the road, it will be more effective.
Hard to quantify, but how bright is it? I’ve seen reviews that have said find for ‘fast road riding’ and others that say it’s fine for in town commuting, but not for open road riding as the beam isn’t bright enough & you can’t see far enough ahead to go above 15mph or so. As ever with internet reviews, there seems to be a real mix of thoughts….