I'm looking for different 12V headlight options for any six wheeler. Not auxiliary lights but the primary headlights themselves.

They need to be something that can be flush mounted just like our OME lights with a seal around them. What brands, shapes, sizes, etc are available? I'm having a hard time locating many options online. I figure some of you have probably experimented with this before.

I would prefer LEDs but am open to any other suggestions.