Dcrainmaker actually uses a wide variety of electronics for biking, swimming, running and hiking, and thoroughly reviews it.
General site:
www.dcrainmaker.com
many action cam reviews, but doesn’t include the very most recent action cams (such as the HERO 9), which is reviewed elsewhere at his site:
www.dcrainmaker.com
I purchased the Sony BOSS action cam when it first came out, and it did an amazing job of stabilization for that time. But I eventually bought the HERO 7 which did even better, and sold the Sony. Eventually I bought the HERO 8 and gave the 7 to my grandson for snowboarding. The Sony was too fiddly IMHO. The GoPros are super simple to operate and easily integrate with your smartphone and computer. GoPros are widely used not just because they advertise a lot, but because they are easy to use, have a huge array of accessories, and produce great results. They are so dominant that at one Banff film festival screening of a new film, the announcer jokingly stated that no GoPro footage was used in the making of the film.