I'm sure you guys have seen HID's behind the older fogged glass headlights. I put a set in my old Escape and took them out after a while. The beam was spread all over the place and was blinding to oncoming traffic. I hate when I come up on a retro-fit like that at night.
The VX has projector style lights with clear lenses vs the older style mentioned above. The light output from HID reflects differently than the light output from a halogen bulb. That's why there is so much scatter from an HID in an older style headlight assembly.
They aren't too bad in the VX and if you aim them properly, you'll be no less offensive than the average Lexus or BMW etc.