Looking to get new tires for 2013 NVP3500 SL. I like a heavier looking tire but mainly want something that does great on grass, dirt, snow, and pavement. I am not offroading but with the stock firestones just being on wet grass is too much. Does anyone have any experience with either of these 2 tires on an NV? I hear the KO2's are quieter but the Duratracs are better in the snow. Does anyone have any experience with these tires on this van?