Either Hella E-codes or Delta E-codes make nice drop-in replacements.

I've used both and prefer the Hellas. They have flat lenses, which can look out of place, but should be a non-issue on a Charger.

Stick with standard wattage bulbs.

Do the relay upgrade in conjunction and you'll be very happy with results.

99% of the HID stuff is crap, and doesn't meet any safety standard (ECE or FMVSS).