Guys,

Any recommendation for dash cam / helmet cam?
For recording riding trip up to 12 hours per day.

Not meant for socmed content creation.
Just want to play back certain scene, or incidents.

Those Insta360  / GoPro has lousy battery life but good quality video.

For fixed cam on front / rear bike, view point is a little low but no worry about battery life.

Haiya... difficult when over ANALysing this...

Any recommendation?

Using the Viofo MT1 on my bike & the A139 Pro in my car.

how does the video quality on Viofo MT1 vs HP M500 ?

My m500 videos are ok2 in the day and blurry at best at night. Also due to naked bike the wind noise is captured quite strongly.

Lol

You are comparing a rm600 product Vs rm1200 product

I was using a rm1xx product before using hp m500.
I'm very happy with the hp.

If you are looking at this range.
Top up a bit.
You can consider scam sj8 pro.
Good video quality.

Reliable.
I was using this daily ( ride motorbike to work) and on weekends I use it when I MTB.
Was using it for about 4 years plus before retiring it.