It all depends on what you are looking for like: beam pattern, function, driving/ fog lights, etc. I have the Blazer Diamond Blue Driving lights on my car and they work pretty sweet. They run about $70 at Checkers Auto Parts. They are 4" and fit in tight to the bumper(with alittle overhang. They actually look really good and are bright.
The sad thing is they didn't make it through my accident.
