I have the 2023 version which, as they say abroad, the company has ruined the video quality since 2021 - I don't have the old version to compare. I wasn't impressed, 4K quality not even close, in daylight conditions with good lighting it’s decent video - 4K here is a joke - in cloudy conditions the quality starts to drop, indoors it's goodnight, VGA is more than enough. Stabilization even while walking is not very good, on a camera that I have mounted depending on the speed and vibrations, things are from mediocre to worse, I haven't used it on a helmet yet, there I think the stabilization will work better, I have tried it for underwater shooting with its waterproof case and it has good image as long as the sea is clear, in general I think it could be better considering its price, if you have a static image it gives good results, in moving shots, forget it.

Very good for its price and definitely worth it compared to the GoPro. Check out the video below for a brief presentation and the stabilization compared to the GoPro.
Review: https://youtu.be/mp808IiPYks
GoPro comparison: https://youtu.be/Okck4hN5lfY