Just a point to take note of: When you start comparing the upper-end LED dyno lights, it's not the lumens to concern yourself with, but rather the lux rating at a specified distance.

Lights like the Cyo, E3, Edelux and IQ Fly are all pretty similar in the total light output, but the shape of the beam will increase the lux (lumens/m^2) reading. With my Supernova E3 side-by-side to a friend's Edelux, he was throwing a lot more useful light to the road surface because of the Edelux' shaped beam optics. Of course, my E3 symmetrical beam throws enough light to the sides and top that we could read roadsigns in the distance without our helmet lamps, so there's benefits and drawbacks to each.