Other than blinding oncoming motorists is there any point to HID's for use on a public road? The standard halogens are more than sufficient in my experience right upto the legal limit even on rural roads. If you are having problems with the stock light output either you have an electrical fault or you are driving far too fast for the conditions.
Sorry but I get really P'd off by people fitting stupidly bright headlamps and showing no regard for other road users. They rank no2 in my list of pet hates right after idiots who use fog lamps incorrectly.