Compared to a MagicShine, you'll be disappointed.

I own a Schmidt Edelux and a MagicShine. The Edelux is the second-brightest dynamo headlight after the Supernova E3 Triple. It doesn't hold a candle to the MagicShine. When I run both on the same bike, I can pretty much turn off the dynamo light.

That said, I'm happy with the output of the Edelux in the dry and in less well-lit areas. Through the winter on wet, snowy, slushy, icy roads, and in the bright lights of downtown, I can only tell it's on by the reflection off the front fender. The beam of the MagicShine can get lost in those conditions too, but at least fairly close it's still discernible.

As no1mad says, your own night vision is an important variable. Mine is terrible, (runs in the family). I know of other MS users on this board who think the medium setting is overpowering. I think the high setting is weak.

On that topic, the MS's medium setting is about the same output as the Edelux.

IMHO, I wouldn't waste the time, money or effort on halogen with dynamos. I've seen them--barely. They remind me of old-school (60s and 70s) penlights.

The reason is that halogen (and all other filament bulbs) are a heater that gives off light as a waste product--the filament has to get hot enough to glow. Whereas LED are lights that give off heat (and not much of it) as a waste product. The proportions are reversed. Respectfully, I submit that those who are recommending halogen dynamo lights haven't seen the LEDs. There's simply no comparison.