I'm bored of changing my h7 bulbs every other month as they keep popping, Used almost every variety of bulb now from legal to less so. I'm considering swapping out to some HID ones. It's a 2006 2.0tdci if that makes any difference, what have people used here and is it straight forward to do. The headlight lenses are clear and not cloudy, as i recently treated and polished them back up. What you guys reckon..