... This question is probably everyone. Both are priced at almost the same. When you spend so much money on an Action CAM, then does not count the last cent. Presumably you do with two CAMs no blunders. I opted for the Sony because it has the clearly better image stabilizer, the better picture quality and a remote control has, so that you can not in the rain must muddle the smartphone out. In addition, Sony is in the field of video cameras for years at the top with it. The Action CAMs has long slept, but now caught up Sony. For a company like Sony I trust to a different quality than a small company like Gopro who have to buy all the parts and certainly can not qualify to the same extent as Sony before they are used. But since I do not own myself ultimately Gopro, I can continue to report only on the FDR x1000. For the first time Sony has brought a video camera out, which is equal to International. You can buy them in every country, and configure to their needs. Even in Japan. Essentially is the configuration via icons or 4 letters ads. One can argue about the logic of the arrangement. Seeking much which option hiding where, but I now place no longer so much about. So it's not so bad. The form factor of a normal miniaturized video camera is pleasant and on the bike quite streamlined. The stabilization is able to not work miracles, but on the bike affects the filmed as if on rails, as long as you do not go on boulders. The picture is very sharp, the distortion is not very extreme with stabilizer. Even in the dark she films still good. Underwater I lack, I've already bought the right front, but go only in a few days to the sea for testing. Typical Sony's once again a special codec (XAVC-S), which is not supported in all forms. One can also HD movies in 50Mbit, which gives a great quality, but I have no program found that this can cut. It can be read, must then write to 25Mbit down at. Even with the Sony software. Strongly reminiscent of the problems with Sony's 3D CAMs. But is not so bad. With 4K's works with the programs and the high data rate. The Sony support I have therefore been contacted, but this is worthless. For several years, Sony can not provide usable Support more. Too bad! Those looking for accessories, will initially despair. You get the feeling that nothing is available for this camera. If one looks more closely, one realizes that it has a standard thread and Sony's "Standard" shoe for accessories. Even if Sony gives almost no accessories on the website, fits almost all of the other cameras. Well, super sloppy, Sony. Please maintain site !!!! The transfer to the computer the files is incredibly fast. Anyway, if you have a fast card. With 4K UHS U3, please see instructions. Unfortunately, there is probably no way to transfer the files via WLAN. Funny, since the camera actually still has an Access Point. But perhaps the feature will come. Currently FW is 1:00. GPS is very slow. My first real test is largely without GPS signal, the camera has almost 15min. Used to find satellites. If you have GPS, you can show with the Sony software data via overlay, very nice feature. The formatting is not really perfect, but it impressed yet. Will only work if the files are still on the camera. Without camera as it gets. Big plus for me: All tools and drivers, there is also under OS X. With 10:10 all is well. PlayMemories is still quite rudimentary and the Action CAM software is not a big highlight. One does not see that Sony also sells high-quality editing programs. Furthermore, Sony also a free plugin XAVC-S for Final Cut Pro. But if I have not (yet) been tested. Interfacing to the remote worked without problems, even if an instruction would certainly not hurt here. There's but online. At the first pairing but you can hardly do anything wrong. Whether the remote but really worth, I'm not quite sure. Who is not sure before buying, maybe you should first buy the bare camera and the remote control only buy more if it is missing one. Overall, I have not regretted the purchase and am very satisfied. Only the Sony Support interfere. But as long as you do not have problems, you can live without that. The camera itself is typical Sony: Genial!