Back when I had a GoPro, I was using Sandisk Extreme I think. I don't think you can go wrong with Samsung EVO though.

SD card was the biggest problem I had with the GoPro. They were at the time insanely picky about their cards. I had about a dozen cards, all of which worked perfectly in every device I had including other cameras with the same data rate, but only 2 of the cards worked at all in the GoPro. Also once they were formatted in the GoPro they were pretty much wrecked to work in anything else. I would have to jump through hoops to get them to work elsewhere after that.

One of the reasons I don't even consider buying GoPro stuff anymore. The other being that they insisted that if I was having any problem with a GoPro, it clearly had to be my fault because there was certainly nothing wrong with their stuff. Must be me and my crappy cards that sucked. Even though I was using their recommended card. They were pretty rude on support, multiple times.