Hi Kathy,
Here's a great webpage we've found with a detailed breakdown of specific plugs for you to try.
The article starts with the following:
"Ear plugs have undergone a quiet revolution over the last two decades. For many years, manufacturers produced only wax-cotton plugs; pharmacies today are filled with silicone, PVC, and polyurethane stopples. Web sites also sell plugs specifically designed for hunting, loud concerts, and motorcycling. Now there are even hearing aid-like plugs that drown out external sounds by playing white noise.
Given the myriad plugs on the market, I wanted to find the stopple that silences the most sound yet is comfortable and affordable enough for everyday use. But before I release my results, there is something every silence shopper should know: No plug can create artificial deafness. Even if the auditory canal is sealed shut, loud noise, especially lower-pitched sounds, can vibrate through the body and be "heard" by the eardrum."
Take a look at the full page for yourself:
http://www.slate.com/id/2118800/