Peter Frederick wrote: > Note that I see VERY bright purple/blue glare off axis from them, not > white.
They look bluish to me, too. The blue color is problematic because short wavelengths scatter more easily than long ones, creating more glare. Some people also feel that the blue-white color of HID lamps creates a longer afterimage (that "spots in front of your eyes" effect) than the yellow-white light of halogens. In my case this is complicated a little by the fact that my glasses have a bit of a chromic aberration -- bright blue objects aren't focused to the same point as other colors, causing them to have an out-of-focus 'halo' around them.
