A7S III or A7 V for travel vlog

Hello everyone,

I was about to buy A7S III, but after latest releases of A7 V I wonder if that might be a better choice?

I want to use it mainly for travel vlog, I mostly shoot talking head on gorillapod and I like to record a lot of b-roll.

Right now I don’t take many photos, but I’d like to keep that option open for the future.

Good low-light performance is important to me.

Thanks in advance for any advice!