I just use regular disposable plugs. Except I reuse them and wash them until they fall apart. I’ve bought whatever was sold in the venue on several occasions because I forgot mine at home.
In my experience they lower the volume but don’t “muffle” anything. What muffles sound is being exposed to extremely loud music for a couple of hours.
I’d be curious if the expensive ones offer anything more than increased comfort. There is a lot of audiophile stuff out there that is bullshit.
Biden should have seized absolute power and instituted authoritarian communism for the good of the people.