I've been doing some reading on this forum and it seems people have issues with which bulb to use. HIR2 seem to be what they are so I wish to stick to these. I don't want to install a HID kit as these are halogen light units so that idea doesn't sit with me well. Are there any bulbs of the HIR2 design that are whiter and brighter? Contrary to what some people say on this forum that the standard bulbs are adequate, I feel that they're not quite there. Thanks.