[QUOTE=noglider;19982468I normally use a dynamo powered B&M headlight. I don't know, but I'll guess output is 200 lumens or less.
I would like more light, but I've come to prefer a German shaped beam. It would be nice if you could get that beam shape in a high powered light, but I don't know if that's available.[/QUOTE]
How do you define "high powered"?
Your dynamo hub is limiting the output for the light, so maximum would be the B&M IQ-X with 100lx.
bumm.de/en/products/dynamo-scheinwerfer/parent/164/produkt/164rtsndi-01-schwarz-164rtsndi-silber.html

Or you add an external battery powered cut-off beam light, B&M will offer two 150lx version in 2018.
bumm.de/en/products/akku-scheinwerfer.html

For much more power there's the Lupine SL A with 900lm.
lupine.de/products/bike-lights/road-bike-lights