I have the factory round lights on the bumper and ran those for a few years. While they did add to the overall illumination they were almost worthless off road because they vibrated so much on the bumper that it looked like strobe lights going down the road. It was extremely distracting and annoying. I went with the 52 inch curved light bar on top and a couple of smaller cubes down low. There is absolutely no comparison. The light bar lights up the desert like it is daytime. The lights down low help eliminate some of the shadows in rough conditions. If you want function LED light bars are the only way to go. They are pretty cheap now and worth every penny off road.