I spent some time looking around for Aux lights that would help the terrible low beams in bad weather and not offend oncoming traffic. I was not interested in any new technology and most of my searching seemed to center around HID and LED or cheap plastic Fog lights. I wanted a light with high quality optics that would not rust and give years of performance....
I decided to try Hella Rallye 4000 Compact lights in a clear FF Fog beam and could not be happier, they put out a nice usable even pattern with a distinct cut off and the light housing is higher quality than most. With the added money for the Hella HD universal harness (also of good quality), I could have bought some cheaper lights but these will be welcomed by other drivers. I found some Osram 65 watt Rallye H7 bulbs, but I don't think they are even a needed upgrade later, these lights work better than my terrible factory low beams now..
I found the German made Fog beam Rallye 4000 compact at :http://www.rallylights.com/