5-6 hours for all three beams? The HID kit in my van took half an hour to fit. I don't care if it's legal or not, the lights on my vito were dangerously sh!te and I drive a lot on country roads so needed better lights. No-one flashes me so I assume my HID kit isn't blinding people.
My mate has a HID kit in his MK5, again, looks factory so I don't see what all the fuss is about. Fitting rally stage lights is stupid but upgrading to something brighter for your particular driving conditions seems sensible.
Tried uprated bulbs, all a waste of time, hardly any brighter despite wild claims.