I recently bought the TridenX on eBay. I do not have a HID or Dual Cross Pro, so I'm not sure how they compare.
I do have a cateye EL520, so here are some pictures I took. I hope they at least give you some idea how bright it is. These pictures are actually slightly darker than the true brightness. I took some pictures with 4sec exposure, but they were a little blurry for I didn't have a tripod with me.
Camera settings:
f/2.8 ... 2sec exposure
I was standing roughly 10 metres from the tree.
CatEye EL520 - HIGH:
CatEye EL520 - LOW:
Cygolite TridenX - HIGH:
Cygolite TridenX - MED HIGH:
Cygolite TridenX - MED LOW:
Cygolite TridenX - LOW:
Cygolite TridenX - WALKING:
