My first impression was something like, "Holy s***, this thing is bright!" Based on a purely subjective comparison with the Edelux, Edelux II, and Luxos lights I have on several other bikes, the IQ-X is far brighter. It also throws a more even and consistent pattern of light on the roadway, with only minor variations across the swath of illumination it lays on the road.
The light is very well focused, with a definite cutoff that prevents the light from shining up into the eyes of oncoming vehicles. The photos below tell the story:
|Adjusted for maximum throw. The far edge is about 150 feet down the road.|
|The cutoff is clearly visible here in the railings on the side--the IQ-X is lighting up just the very bottom of the railings, with almost no light spillage upward.|
One minor quibble: When making a turn, the tilt of the bike makes the pattern change, drawing it in a bit on the side you're turning toward and creating a less "throw" in that direction. It's not a big deal (I use a helmet-mounted light to look around turns), but it would be great if the optics could be changed to reduce or eliminate this effect.
That minor quibble aside, this is an amazing bright light. So bright, in fact, that I was sure several times that a car behind me was lighting up the road with its headlights, only to check and see that there was no car there.
The IQ-X is available in the USA at www.peterwhitecycles.com and www.clevercycles.com (Disclosure: I paid full retail price for my light from Clever Cycles.)