Just sharing experiences of the two cameras I’ve used.
General – The mount also matters, a flimsy mount will result in crappy shaky footage.
1) Garmin Virb Elite. Cost £140 from amazon in 2014 as a kit including bike mount, surely will cost peanuts now being 6 years later.
Low light performance isn’t great but other than that provides a very sharp 1080p image.
Battery life about 2hrs is OK.
Is waterproof enough to deal with thunderstorms.
The overall package is a bit large by todays standards but fits well on handebars or helmet – is an inconvient shape for other types of mounting like chest.
Inbuilt GPS and accelerometers are handy – can act as a cycle computer of sorts too – displaying power data or whatever but the screen has no backlight so useless in the dark.
2 Shimano CM-1000, cost me £60 second hand about 2 years ago, think it was about £100 new back then – surely will be even cheaper now.
Image is not as sharp as the garmin the outer weatherproofing lens is plastic.
Waterproof enough for a bit of rain but does have problems with thunderstorms.
Super small and lightweight package.
Batterylife about 2.5hrs is ok.