I have to say that in 23 years of driving, I've never been dazzled by headlights reflecting off a wet road.
Well in 6 and living in rainy cities like Manchester and Glasgow - that's all I see.
Maybe thats the difference. I can see that in towns, headlights may not be necessary, and that the light would reflect off the wet road surface, also making road markings less readable.
My point was aimed more at out of town driving, where speeds are much higher and you need to be able to see vehicles that are much further away.
This is an Interesting thread,how I understood it was that there are two types of hid kits you can buy and aslong as you get the kit that does both dip and main beam and stick to 6k so they are White and not blue then they where legal and will pass the mot?
HID's for main beam do not work well as they do not react quick enough. HID's need a short while to warm up, and will not give full power as soon as you switch them on or flash.
New cars with Bi-Xenons generally have one projector light that does both dip and main beam. Once switched onto dip, the lamp will stay on and a shutter lense with alter the pattern from dip to main when required. Most will also have a separate hallogen or LED light for flashing when dip beam is not switched on as that can react quickly