Real high intensity discharge headlights produce much more light, that is whiter, for a given amount of watts than old style incandescent lightbulbs. Nothing magic about them, they're basically fluorescent lights. To reduce the chance of blinding oncoming drivers, real HID patterns have a sharp cutoff at the top of the beam (whether they're projectors like on the Murano, or older style reflectors). In addition the Murano has leveling motors in the headlights to keep the beam appropriately low if you have a lot of weight in the rear or are towing a trailer.
20 dollar bulbs that try to mimic HID are going to be
a) overwattage
b) tinted blue
c) both of the above
Regardless of which brand you buy or how much you spend, you will not get real HID performance. You will get a blue tinted incandescent bulb. It fools nobody.
Note that there are now aftermarket HID kits that the ricers are putting in their reflector housings designed for an incandescent bulb. ("Yo, check it, my 17 second Accord is rockin HIDz, that **** iz off the chain") Now we have the worst of both worlds! An intense light that is very diffuse, with no cutoff. The oncoming drivers experience something like staring up at the overhead lights at an NFL game at night.
