Hi BHK. I have an 07 Sport with HIDs and like you was thoroughly disappointed with the light out of the headlights . I 1st bought new D1 bulbs , Nightbreakers , slight improvement but pink/yellowy tinge to them , but still wasn’t happy, then bought Philips Xenon D1S XtremeVision Gen 2 ( that’s important) and much happier with the results! Longer beam and nice white light. Ok they aren’t cheap at £72.68 each on Amazon but worth it. I then had my headlights polished at a Volvo Independent garage as they were quite cloudy. Again , better beam and clearer ..not perfect..but cheaper than new headlights at £230 each . Oh and upgrade the W5W to LEDs to match the whiter bulbs
Hope that helps, Steve
PS altho the bulbs I took out looked ok they definitely wear out.