I can't answer for Josh. I'd like to hear his response.

Myself, it depends on where you're coming from. I own a 2009 Schmidt Edelux and a 2013 B&M Luxos-U. Both are the high-end light for their respective model years.

If you're coming from another high-end dynamo headlight, it's not worth upgrading at this time. If you're coming from a low to mid-range LED dynamo light (10-40 lux) it's certainly worth it, and if you're coming from an old halogen one, what the hell are you waiting for?

In a nutshell, in the five years separating my lights, there hasn't been significant improvement in the amount of light that high-end dyno headlights produce.

The difference between the Edelux and the Luxos are that the Luxos steals some photons from the central beam and spreads them into a wider pattern. Over 15 mph, I prefer my Edelux--it has better "throw". Under 15 mph I prefer my Luxos, especially when slowly picking my way through icy ruts and semi-plowed streets. It's also far easier to wipe collected snow off the lens of the Luxos--there's no bezel ring to trap the snow.

The Luxos also has a nice daytime running light mode, and the U model uses a battery for the standlight instead of a capacitor, and offers USB charging at the handlebar.

They're both fine lights, I recommend them both, if you choose the right one for your circumstances. If you have one, it's not worth "upgrading" to the other.