I prefer a helmet mount, because my main goal is to record other vehicles in case there is an incident. You can turn your head and record to the side or even behind you.

If you are looking to record nice videos of your ride, a handlebar or frame mount is better.

There are some 360-degree cameras out there, but they are expensive, at least the ones capable of recording license plates clearly. Maybe in 5 years.

Also those "follow me" drones would be awesome, providing a view from 20 feet or more up, but they are not practical, and probably illegal.