I like Etymotic (https://www.etymotic.com). The design lowers the decibels without affecting the sound too much. I used to play in a band with a drummer who always wore their high-end plugs which you have to have molded to your ear canals, but they also make cheaper standardized ones that do a good job.
The cheap etymotic plugs are great value. I always have a pair on my keyring. The advantage over foam plugs is that the attenuation is more linear so you don’t feel so weird wearing them.
