I've worn Howard Leight "Max" foam earplugs forever. In the past, they've done a good job for me, comfy and effective.
I recently bought a new box of 200 pairs, and these plugs seem different. They look the same as before, but they feel less substantial, as though the foam is now less dense. It's harder to get a good seal in my ear than it used to be. No harder to insert, but the poor seal -> noisier.
Anyone else notice this? The reason I'm not sure is I had tonsil cancer in 2007, and my head and neck (and, perhaps, my ear canals) are different than they were before. I suppose that might affect how well the plugs work.