i've got xenons on my MK4 and they i think they are more white that the ones on the MK5, i quite often see a MK5 GT TDI 4 motion on the way home who also has xenon's and his look more blue, although he may have changed the bulbs for a different temperature.
i think they are well worth the money, as you get a uniform light pattern, not just 'spots' of light, plus the colour is easier on the eye.
