I have ordered one of the new HDS Action Lights, the one with the two d-cell waist mounted batts. I am an avid caver and this will be my primary light source. I have read up on the action light numerous times at the website and know that without a doubt this is by far the most sturdy light EVER made! It was made specifically for caving, which happens to be the most destructable testfield for any equipment. I would like to hear from anybody who owns an action light. i'm concerned about the white light output of led's. a fellow caver bought one of the princeton tech MATRIX headlamps with 3 leds and used it on a caving trip and HATED the bluish white light output of leds. said it almost made him sick at his stomach. Does the action light with its high cost have a whiter light output than the MATRIX? I sure hope so. Thanks, Kev