I have tried various kinds of ear plugs, but they never really feel like the live up to their claimed NRR to me. They claim 33db Noise reduction, but it doesn't seem like that much. I recently got earmuffs that are rated 30db noise reduction and they reduce noise so much greater than the 33db ear plugs. Does anyone else have issues with ear plugs? Maybe my ear canals are just larger or oddly shaped that ear plugs don't fit well. I work in an area where there are a lot of loud noises and with my new T and H hearing protection is a must.