Hilldweller
SE Expedition Society
If you're going to use them as supplements to your highbeams, you should really get ones that are legal.1. those are too expensive
2. No. Not just for offroad. I live in rural San Diego and need more light at 5am when I'm leaving for work.
That rules out all of the HID nonsense you were thinking of.
Have you considered some Cibie Oscars? Nice lights and they're legal.
Hella 4000s are almost legal and not annoying to oncoming traffic.