I got a L2D for both my wife and I. We both use them on helmet lights and they work great. We both have a Dinotte 200L as bar lights which have a wider flood but the Fenix really lights up whereever you are looking so they make a pretty good combo. The fenix strobe is really bright and attention getting during the day and turbo is great in really dense fog otherwise I usually run it on medium or high to overlap the dinotte where I'm trying to look.

Up until last weekend I was certain I'd switch to dual fenix bar lights instead of the dinotte if I could choose but the fenix seems to be running out of battery power really quick on turbo in the winter. It might be the cold really taking a toll on the NIMH. The batteries sitting in a cold metal tube up there in the wind surely make sure they get frozen really quick. The dinotte lights stay warmish and out of the wind in my front bag.

My wife takes her fenix off her helmet and puts it into the belt holder for her job as an animal control officer and found it very useful. Lots of times the police officers or residents offer her a flashlight when they see that tiny thing but shutup really quick when they see the light output. I pull it off my helmet all the time for around the house use.