I'm interested to see what the difference is, and to see whether or not the battery tray contacts are physically attached to the inside of the light boduy, or just free floating within the tube? Thanks.
Dryglove:I purchased a photon torpedo to replace my flood prone and finicky on/off oxycheq light. The beauty of the PT is the on/off set up is far superior to that of the other back up lights on the market. It is a very simple but effective the way PT has set up the light to turn on when screwed down and to shut off with a slight twist back. If any one is interested i can take pics of the two set ups side by side showing how the contact works and why the PT is much easier and reliable to turn on with a solid on/off contact.