Are those Luxeon and Cree leds that much better than the cheap ones you find on ebay? Is 1 led really bright enough to light my way going 15-20mph?

I guess I just have never seen these in person. I got what I have hooked up finally. Dynamo > Bridge Rectifier > 25 leds in parallel. It's definitely acceptable and I only notice a slight flicker if I ride so slow that I could almost be walking. I feel like 25 leds should be a little brighter, but it still does a decent job of lighting my way. I think it could have something to do with the lens though. I have the 25 leds shining out through the lens from the old Union housing that was meant for an incandescent bulb.

I think I don't want to have to mount or stash a battery pack anywhere on the bike. It's starting to feel too cluttered. Unless I can get a supercapacitor to work and fit it inside the housing, I will probably just nix the stand light. I really don't think I will be riding all the frequently in the dark and as it is now is acceptable for me.