I am going to purchase an Apple Watch today or tomorrow. I planned to get the sport watch, but I am worried that the glass will scratch more easily than the more expensive sapphire crystal version. Can I please get some feedback? Is it worth spending more money to get the sapphire crystal or is the Ion-X glass good enough? I don't really feel like spending $200 more if the difference is negligible. Should I put a screen protector on it? I feel weird doing that, but I figured I'd throw that question out there as well. Thanks a lot!