I installed some of the HIDX 4" lights
the other day and I'm real impressed with them.
The 4" units are pretty small, although quiet deep, but were ideal for what I needed for my bumper. If you like low profile lighting the 4" ones are a good choice, if you prefer bigger lights then the 7" ones will be available next month.
The current 4" ones come with an red anodized aluminum trim ring, which for my JK worked out well. 4" units with with black trim rings will be available next month also.
I had already run relay switched wiring for some previous lights, so used that. As they only draw 35w it would be interesting to see if they would run off the factory fog light circuit.
The mounting bracket hardware is stainless and aluminum and very well made, one of the best I've seen on any light.
The beam pattern is great, not sudden cut offs or weird shaped pattern, pretty well diffused and a good overall pattern.
I have mine aimed down slightly as I want the area around me lit up really well, aiming them slightly higher may get you a little more distance.
The pictures do not do justice to how bright these lights are, when you turn them off the factory headlights, (with Silverstar bulbs), look like candles.