I’m no earplug connoisseur, but I’ve been using Westone’s WM16 for smaller venues, and Etymotic Research’s ER20XS dual-flange for louder situations. I haven’t tried much else, but these work well for me. I’ve also heard great things about Earasers, Eargasm, and Hearos.

Earasers are a bit more expensive and appear to have a unique ergonomic eartip. iirc you can get them for $40 elsewhere, maybe Amazon. I’ve read that Earasers’ “-19dB Peak” model has a very slight sound reduction, so I’d probably opt for their middle “European Standard” model. On the other end of the price spectrum, Hearos is particularly inexpensive at a glance. Idk anything about specific models.

Some brands have multiple types of earplugs (e.g. for music, shooting, construction work), so make sure you’re getting one designed for music or “high-fidelity” or something like that. Any of the “good” brands are probably going to work just fine. (Read the reviews if you’re unsure.) Most brands seem to include multiple eartip sizes in the package so you can choose the right fit.

Beyond that, there is some element of personal preference. For example, I first tried Etymotic’s classic triple-flange version and didn’t like how deep they stuck into my ears. It felt invasive. But the dual-flange model feels great for me.

And finally, there are different options for how much attenuation (noise reduction) you want. Like I mentioned, my “-16dB average attenuation” earplugs feel good for small/medium venues (a backroom venue of a bar, maybe a theater). For a larger venue (arena or stadium, or even just a really loud loud theater) you’d definitely want more significant average attenuation, probably in the low-to-mid twenties.

Most earplugs will be confusingly marketed with multiple attenuation values. One will be an official NRR value, which is apparently required but controversial, and the other(s) will be the average and/or peak decibel reduction “when the product is used correctly” as reported by the manufacturer. It seems people don’t talk about the NRR as often. But it’s fun that they’ve made it more complicated for us to compare products.

I should also mention that if you’re a performing musician or hardcore concert-goer, you may consider springing for custom-molded earplugs, which are way pricier. I haven’t made that upgrade yet, but everyone who does seems to think it’s life-changing.

This got long, sorry!