Here's a good article on the subject plus their top 10 list.
https://www.windingroad.com/articles...guide-helmets/
I'd also agree, that besides proper certification, fit is king.
And while none of us do 4hr stints at LeMans, comfort is very important.
Before i updated my lid to another Bell Sport Mag a couple of years ago, I did try a Stilo with an integrated comms package and it didn't fit me well at all.
So, try a few, take your time testing them in a store, etc.