Loudest knife when flicking/flipping open?

[NG VI]

These won't all be the loudest knives ever, but here are a couple clips of notable noisy guys I have on hand

WE 615 Cirrus

https://imgur.com/a/F4bIuuJ

QSP Pelican.

https://imgur.com/a/z6ANYeG

Kizer Kyre.

https://imgur.com/a/eXQww9j

 

[mrknife]

probably a benchmade 6x balisong, that sweet click clack sound of the handles slapping together

 

[Rocket 1956]

My new Griptilian makes a pretty loud crack when flicked.
I think the plastic scales have something to do with that.