Any crystal balling on the future of lights suitalbe for a hard core commuter / road trainer?
I think the future is dynamo-powered LED. Dynamo hub with
Solidlights 1203D. There is a review
here and some comments and comparaison with the Lumotec at the
cyclingplus forum (search for 1203D). Very expensive but it's a "install and forget" thing. No bulb to change, no battery to charge, ever.
Peter White sells Inoled brand.