1. HID bulbs on mirrors designed for filament bulbs suck big time, they project light wherever possible except where needed;
2. Best HID setup is a complete headlight with dedicated lens, even if it may be expensive;
3. Filament options for better lighting: Philips, either Premium, VisionPlus or Xtreme Power, if you want yellowish light, for rain driving, Night Vision if you need better light spread in dry weather. Blue Vision lights just like a Vision Plus but whiter.
I have VisionPlus on high beam, Premium on main beam and foglights. The 30% increase in luminosity of the Premiums could be seen while comparing them with stock bulbs, but did little difference in traffic. The 50% increase of the VisionPlus, however, felt more like a 100%
~Nautilus