[400TT]

Just be careful with the ADR requirements, with Xenon I think it is mandatory to fit wiper or pressure washer and also self levelling device. But not an area we are expert on as we have avoilded them.

We have had great success with those high quality H4 bulbs, the expensive ones that are spec'd with better light output etc, not brighter, but just cleaner/whiter light out of them. I think they are called names like ultra blue, white lightening etc. See Hella and Narva brands.