Had KO on an Xterra and they were nail magnets, no idea why. I have Duratracs on my burb and like them. Yes a bit loud. When I went to choose between the KO2 and Duratracs, the KO2 were quite a bit more, and I dont recall if the KO2 had the snowflake mountain symbol, but the duratracs did. Prior to those I had wrangler silent armour tires. Much less agressive, but very quiet, less traction in snow.