Most commuter-oriented shops will have the Shimano LP-600 and/or the Planet Bike Blaze 1W. We sell Busch & Muller at my shop and I've used the same Lumotec Oval Senso Plus for six years. It's outlasted a dozen bulbs and two dynohubs. It's great.
If you just want something cheap, any shop that carries lowrider stuff will have cool inexpensive chrome headlamps for about $15 -- the type that are OEM on contemporary Dutch bikes.
If you want something retro but fancy, the Busch & Muller Retro is nice.
For an Azor, I would imagine that something basic like the Lumotec Round would seem about right. It also depends on where you mount it. I think the Round looks best mounted low, tucked in against the fork crown. If you mount it at the stem/head tube, one of the fuller bodied designs would probably look better. The Shimano and Planet Bike models are very functional but I imagine might be eyesores on your nice Dutch bike.
I have to mount it low on the fork because I sometimes run a front rack. Are you familiar with the lumotec cyo? I ride at night frequently so I would like to get a good upgrade from the OEM light.