there are 3 Primary beam patters
Driving- like normal headlights but will be brighter and shine a little bit further
Pencil/spot- A concentrated beam that will shine very far but not very wide.
Fog- shines very wide and close, wont normally go farther than your headlights
here are some charts for the different lights and outputs they give
Driving and pencil
Here is a chart I put together to give a gerneral idea on how the beams will look.
Link to offroad lighting
Cheapest Hella 500's Ive found, since a lot of people use these and ask about them.
Convert your hella's to HID's
LightForce lights are really good lights as well. with these you can simply change the filters that clip on the front of them to change your beam pattern or color
Feel free to add any info you think would be helpfull