Despite the fact that both GoPro and Sony have some flaws, I will go with Sony since I place a higher priority on the overall picture quality. Some pros: Everyone is aware of the benefits, which include optical recording rather than merely a digital stub, high picture quality when exposed to adequate light, and so on. We went mountain biking with some good friends and videotaped the experience with two separate cameras: this one and a GoPro Hero3+. When the sky is overcast, there is not much of a difference between the two cameras, but when the sun is shining, the as300 is a clear winner over the Hero3+. Both while shooting in a static environment and when shooting in dynamic environments. The change in the picture is easily discernible even without close inspection. As a result of this experience, I made the decision to purchase an AS300 for myself. Some cons: The fact that there is an optical stub means that the camera no longer captures quite as much motion as it used to, which is the primary drawback. A camera that belonged to a friend was mounted to a snowboard. At some point, the mount became loose, and the camera started to hit the board with an amplitude that was not particularly large. 20 seconds passed while he skated in such a manner, during which time he lost focus. As a direct consequence of this, the lens assembly had to be replaced. My camera was in its protective case when it dropped to the ground from a height of about one meter into the asphalt; the outcome was the same; it was out of focus. It's just me, but I've already switched out both the lens and the main board. The only thing that might be considered a silver lining is that both times they replaced it under the warranty, there were no issues. But, once the guarantee has expired, the cost of such repairs is not going to be particularly reasonable. And the scenario in which the camera malfunctions at the very beginning of a trip, for example, is not likely to make anyone happy during the holiday.