I just got a new 2015 santa fe sport as well. Spend the extra money on the weathertech mats. It was my first priority with a new vehicle. They fit great and with the crappy weather here my carpet is as good as new still...
5 vehicles ago I said I would never spend that on mats as well.
The last 5 have had Weathertech mats. As will the next five. They are worth every penny IMO. I took them with me when I picked up my F150 and installed them before I drove the truck. The Santa Fe was more last second so we didn't have them with us. They were ordered that day though.
There are some less expensive options that have come on the market recently. They may be good as well.