That's one of my favorites too, love the smell and love the flash when it blooms, and you are right that they last a long time.
My sweety tells me that this here is one of the parent plants of that particular cross that I have blooming at the moment:
(not so hot with the camera this morning yet, so the pics aren't the best)
I figured one with flash and the other without.
Arachnostylus Jetime
It is one of our best bloomers and does so faithfully each year even after having been moved several times to different locations, it's just a very thankful plant.