GoPro facing stiff competition these days - for good reason
I use GoPro daily whenever I drive and as a POV user for around six-years I would say they are, presently, an average product. My employer has a total of eleven units - all mounted in vehicles.
GoPro is fussy on which SD memory chips you use, uses custom rechargeable batteries (identical to a cell battery) and it FOGS UP even on hot days. They recommend using the vented case, which has large holes in it, but is hardly suitable for expeditions in high-humidity/downpour conditions.
GoPro, who has never acknowledged/answered my condensation complaint now INCLUDES DESICCANTS for some models to ameliorate the condensation which effectively blocks the video sensor.
Another deficiency is GoPro's belief in plastic. The camera proper will not work unless it is within the outer plastic casing, in which the lens is mounted/attached. This plastic case has a plastic mount and a plastic foot, the foot SLIDES in to the various mounting options, many of which rely on glue.
I changed the plastic foot to a stainless one; and I protect all camera locations, including my helmet, in stainless steels cages made from one-eighth round bar (rod). The GoPro supposition that you can use a plastic mount EXTERNAL to the safety cage of a racing car is wishful thinking. Their concept of GLUING a helmet cam to a HELMET is equally stupid as they can easily be twisted off in an accident or by a passing thief on a motorcycle.
I recommend the people working El Reg's own Low Orbit Helium Assisted Navigator (LOHAN) spacecraft) do some serious preflight testing in a food freezer AND include a secondary POV (the Sony is good - we have road tested them), ADDITIONAL BATTERIES (an extra battery on the camera ALONG with a battery source external to the camera. Remember, camera frame rates interact with the SD memory so test carefully.
Just because a product has big bucks behind it's advertising and a shiny web site, doesn't make the product good or best in class.
P.S. This isn't a product review, this is user report.