I've been very happy with my Supernova E3 Pro. I've used both the asymmetrical and symmetrical lens models, and each has its benefits. For urban riding, the asymmetrical offers excellent illumination in a wide pattern, from 0-60 feet or so. The symmentrical beam is a litttle brighter and casts a longer beam, at the expense of some near-field illumination.
Compared to the magicshine that the E3 replaced, they are not as bright, but I do not feel that I am missing anything. I quite like the fact that I do not need to worry about a battery, and have plenty of light to work with, even if it is somewhat less than the MS.
From what I've seen, the quality of the light is better - it is more uniform, with no discernable hot spots or dead zones, which I did have with the MS.

OH - dynamo is the Shimano Alfine.