I have used SilverStar H1s in my fogs very effectively, but we actually have fog here. They work great in snow too. I've never tried it but others here have removed the defuser and used the fog as a driving light after reaiming it. I just changed to the UltraStars on my DD and the highbeams are VERY bright compared to OEM and the original SilverStars. I guess I'll find out tonight how well they cut through snow.
2004 DTR Marauder, Built 26 February 2004, Inservice: 02 July 2004 Retired from DD 17 July 2008. Survived the cut, 28 April 2012. Back as a DD as of 18 November 2012.