Famavala Clear Bumper Case ($6)
One problem with a lot of TPU cases is they scratch easily since it's a soft plastic material. They keep phones safe, so it's not too big of a deal.
However, if you want to avoid that check out this case form Famavala. It's completely clear and shows off the Galaxy Note 8 style. The entire case is a clear hard polycarbonate plastic. Then, the corners and sides have a soft TPU bumper with reinforced corners for added drop protection.
This keeps the phone safe and the case scratch-free. The best of both worlds.