I was going to put some HID lights in my truck but I was reading up and VA wont allow you to have them if they aren't stock with your vehicle. I'm sure that a cop wouldn't know the difference and as long as you have them leveled right it wouldn't be a problem, but it's so much money.
I like my H4 and getting ready to add some Hella 500s with some upgrades bulbs and I'm still only about 1/4 the price for the light output. I have money left over for rock lights and backup lights as well.