I purchased the Pro Ear Stalker from Cabelas two years ago, and it was by the far the best purchase I have ever made. They cost around $200, but if you think about the damage they prevent, the cost isn't an issue. A couple of things to mention, they are large and somewhat cumbersome. They are an earmuff system that encloses your entire ear, so the first day wearing them takes a bit of time to get a feel for the nuances of having sound projected to your ear through a microphone. Also, they are somewhat annoying on windy days. However, they have a volume control so you can adjust accordingly, especially if the wind is extreme. The other major adjustment is shooting. While they don't interfere with your normal shouldering, the added little bit of extra weight on your head does seem to affect your shooting style. I went out to the range on two separate occassions to get a good feel for earmuffs and to see if they work. Several reps and I was comfortable with them.
If anybody needs a testament to their value, I highly recommend these earmuffs. All I can tell you is that this is a small price to pay for ear protection. If any of you are bothered by the ringing (which means that your inner ear has been damaged), spend the money to protect yourself.