570 base model vs sp, any problems specific to the different models?

Would it be smarter to buy the new sportsman 570 base model (I want to get power steering) or go ahead and get the 570 sp? I love the gray color for the 2016 and the black for 2017. I want to have decent tires and rims (which come on the sp) but I don’t need anything to crazy, I baby my toys and wouldn’t have to really worry about getting stuck on the 26" tires that come with it. But the tires that come on the base model are crap and I would definitely have to replace those even if it were just for looks. Also, are there any known differences in performance between 2016 and the 2017 models? And I would love to talk to someone who personally owns a sportsman sp and get their thoughts on whether or not they like it. I’ve done tons of research on the 570 itself but haven’t found much on the sp. thank you for your comments! All opinions welcome!