I used a hope vision 1 on the dunich dynamo. Obviously most of the time there were other people's lights also on the road. But when I found myself on my own for sections and put it on the brightest setting it lit up a surprising amount of road. It was more than enough even on a pitch black country lane. The only gripe is that my light doesn't have a warning light when the battery is running low. I've heard the new models have one though.
I used a hope vision 1 on the dunich dynamo. Obviously most of the time there were other people's lights also on the road. But when I found myself on my own for sections and put it on the brightest setting it lit up a surprising amount of road. It was more than enough even on a pitch black country lane. The only gripe is that my light doesn't have a warning light when the battery is running low. I've heard the new models have one though.