Just bought one of the new CREE XR-E LED Flashlights and affixed to my helmet. This light is amazingly bright and works as a great compliment to my handlebar light.. I am using the Fenix L1D-CE flashlight, it cost 54.00.. Sounds like a lot for a flashlight but this thing is bright and works on a single AA battery.
To affix to my helmet, I am using a zefal doodad plus which is made to affix a pump to your bike but works well for attaching a flashlight to your helmet.. It can found in your LBS or online for about 10.00.. I am still waiting for my twofish bikeblocks that I ordered over a week ago to test out..
I was almost ready to pull the trigger on a Dinotte and starting reading some of my flashlight oriented websites, yes they exist.. http://www.candlepowerforums.com/ This bulb is all the rage and if you wait and see, you will see many of the new bike lights using this style bulb.. It is bright and energy efficient.. The CREE led is slightly brighter than the 5 watt luxeon star which is being used by dinotte. It achieves a little better burn rate but with just 1-aa battery instead of 4 for the dinotte.. For my testing I was using Duracell 2650mah nimh batteries.. I achieved just over 2 hours in what is called turbo mode and close to 3 hours in high mode.. The strobe mode ran for just over 4 hours, I like using strobe for being see at night. Give a driver a glance and they will be rubbing there eyes. All these times are slightly longer than the advertised burn rates. Using alkaline batteries will give you significantly lower burn rates..
Dinotte has a new light coming out this year using this same technology for a 3 led bulb handlebar light, the 500L that will rival the HID lights on the market.. Hopefully they will also incorporate this new bulb into there other lines.. Here is the link to that article, scroll to the bottom..
I have included some pics of the light mounted on my helmet.. It weighs 2.8 ounces with battery and is a suberb supplement to anyone on the road.. These have only been out since the 1st of February and are sometimes tough to find.. You can order direct or ebay seems to have a handful of sellers.. The staircase pics below show the L1D-CE versus a standard 8 led light. I know many of you think that the standard leds are good enough, when you see the comparison it will surprise you.. The pics are taken from 20 feet away from the door.
Good Luck and stay safe.. If you decide to go this route, make sure to order the CE model.