Regarding the Shimano IGH discussion I just thought I'd throw in my two cents. One of the bikes I've been commuting on the last couple years has a Shimano Nexus SG 8R31 (with the cesur.de disc brake adapter) and aside from a faulty cassette joint it has been comparable to my Alfine I8 (equipped bike) on every level.
So, +1 for fans of Shimano IGH.
That being said this seems like a no brainer for a quality dynamo hub/light combo:
wheel:
http://www.airbomb.com/itemMatrix.as...=&MatrixType=2
doc:
http://techdocs.shimano.com/media/te...9830600131.pdf
Light:
http://aebike.com/page.cfm?action=de...=30&SKU=LT9901
$347.00 all together? Not bad.