You could say that I am a little bit of an experienced earplug user as I have been wearing them for the last 36 years. I have tried but never found anything better and more effective than Quies wax earplugs (disposables). The custom mades I got on several occasions were maybe slightly better but given the extra cost not worth it.

On the many long plane rides I take I usually put in my Quies and on top of them the Bose QC25 headphones ... and then it gets super silent :-)