I went out for a few minutes this evening and compared this to my Light & Motion Vega. I wish I could compare it to my Princeton Tec Switchback 3 but I had to send it in for warranty service Friday. Luckily this light came in the mail.
There really is no comparison. This little flashlight makes a great helmet light. If it is turned on I cannot even tell if the Vega is on or off. Nice wide spot and lots of even spill to light the way. You could easily use this little flashlight by itself and ride in the 16-18 mile range. I will have to test it on descents next Tuesday night.
Trying it inside my garage the Light and Motion Vega looks pathetic compared to this flashlight. The Light and Motion Vega has a smaller spot and spill and is not as bright or white. The flashlight beats it in every way and by a lot.
I have the Zefal Doodad and the Bikeblock. The bikeblock works much better since it conforms well to the shape of my Bell Sweep. I did my best on the pictures but could not get the flash to work. The Doodad will fit underneath the flashlight as mounted but just barely so the profile is low.
Sorry, camera work is not my forte.