I test the X7 for some time now and have to say that it strikes the GoPro Hero3 Black hands down clearly. If you compare the video footage from two cameras, is immediately apparent that the colors of Actionpro are much better. Most is to feel this difference underwater because the Actionpro X7 has an extra "dive mode". Unlike my GoPro the Actionpro is far also never crashed or if the battery is frozen. I must say that the camera is its price while maximizing value and makes me still a lot of fun :)