As being an owner of both GoPros and Sony Action Cams I can certainly shed some light here. Now I had a Hero 3 for a while until it fell of a car and got ran over (friend used his cheap ebay mount when borrowing my cam for when he was racing at the track LOL) and a while after that I bought a Sony AS30V Action Cam. I loved the GoPro a lot, no complaints about it other than shaky video problems. After it died I got a good deal for the Sony AS30V. Well, it was okay for a bit... I really liked the quality of the video it produced, and the image stabilization was great, but it was not quite to par. So shortly I returned that and spent extra for the AS100V. Water-proof without a case, tripod compatible out of the box, image stabilization, gps, Zeiss lens, and a big name such as Sony to back it up... Heck yea! As many know, Sony is known for many great products such as video cameras used in Hollywood movies, personal cameras, TVs etc... The Zeiss lens was an added big name for those into photography or film to know about. They are great quality lenses. This helps to understand just how well built this POV action camera really is.
Sony AS100V Action Cam side
Sony AS100V Action Cam side
Now for the details, video quality is great, and so is on the GoPro 3+, yet colors are much more realistic and sharp on the Sony compared to the GoPro. In low light situations, the GoPro 3+ lacks when side by side to Sony. Now its nothing huge but there is certainly a noticeable difference (just look at Youtube for good side by side videos). Audio quality is pretty much dead even. Both are not going to produce movie quality audio, sorry. Best to use an external mic if you want audio. The main issue is just wind noise. You can buy wind reducers though for cheap which I recommend if you don't run an external mic. The AS100V's GPS feature is actually pretty interesting. It will track speed, elevation, grade, distance and location, which can ALL be overlaid onto your video footage. I use this for car races because I am like a turtle on a bike hahaha. Very cool to have though. And lastly, no case to have it waterproof. Nice feature because sometimes you just don't want that extra plastic "lens" to "cover" your video and reduce the quality (which also reduces audio quality and makes wind noise worse from what I noticed, also an issue with GoPros FYI).The Details:
• Sony AS100V Action Cam (camera only)
• 122g (with case, battery, card)
• 24.2mm x 46.5mm x 81.5mm (no case)
• 35.5mm x 61.5mm x 96.5mm (case)
• CAD $329.99, USD $299.99 (list price of camera only)
• CAD $429.99, USD $399.99 (list price of camera+live view remote)
The reason I chose to go Sony over GoPro, even though I loved my GoPro, was influenced by the big giant of a brand Sony and most importantly... image stabilization! Since I would be using this camera for a mixture of mountain biking, car racing, and event filming, the stabilization was a nice feature to consider as my hands are far from being steady at any given moment. Sometimes the feature can be a little weird (more noticeable when on a car), as it will appear to move when the camera itself is in a fixed position, its weird to explain... But for situations like that I just keep it off now. But I do like it for rough trails on my bike so it is an eye appealing video. Overall, I am very happy with my Sony AS100V and it suits the tasks I give to it.A side note...
DO NOT buy the handlebar mount made by Sony. It runs for around $40, when $10-20 more can get you a K-Edge aluminum handlebar mount. The Sony mount allows you to "tilt" it which creates the issue of it jittering back and forth creating a very rough video which also creates a jittering sound that is picked up by its stereo microphones. My "DIY" fix was to just JB Weld it so it won't tilt, which is fine with me as I can rotate the whole mount anyways by loosening and tightening it to the desired position. One more side note...
If you want more mounts, buy a GoPro-to-1/4inch thread adapter ($5-10 on Amazon) and use your Sony Action Cam on GoPro styled mounts.
*This is the Live View Remote that Sony Sells either separately or together in a bundle. It can control up to 5 other Action Cams
Sony AS100V Action Cam Zeiss lens and top
Sony AS100V Action Cam rear controls
Sony AS100V Action Cam side controls and display