delta; they're both wonderful bikes, can't go wroing with either choice though i'm very partial to the Uly. upgrades to a Uly almost limitless but personally i'd go with volt meter gauge, heated grips, heated vest for yourself, full service of bike before you set sail, and perhaps a skid plate on the factory muffler though you have to make it yourself. i can send you specs if you like. as for tires i have no idea as i'm running econo brand street Shinkos on my Uly.