They're great. They take a little getting used to, but worth it. I'm totally partial to those orange cylindrical ones they sell in the hardware store. Holding them in while they're expanding in your ear really makes a difference. It's quite noisy where I live (by an airport and plenty of trains too) and it usually doesn't bother me (sirens though, not a fan of those), but at night, when Brain is too busy for its own good, even little sounds feed it.

(I've found those elongated ones that taper useless. But somebody must be buyin' 'em, because they're all over the place. To each his own.)

The Earplug Connoisseur
(Hahaha)