I've got a set of Pro-Ears. I like them. They're pretty comfortable for a long time, as well. As pure noise protectors, they do not work as well as dedicated ear muffs though. I think they're something like 25db. The Pro-Ears have the ability to move a jumper on the circuit board, which increases the amplification of normal sounds. Essentially, you can wear them if you're hunting, and you've got super-human hearing... and they DO effectively mute gunshots. It's pretty amazing. One plus for the Pro-Ears - they utilize a system that does not cut out ALL sounds when they sense a gun shot. They ONLY cut out the gun shot.
With lower priced units, when a gun shot is sensed, ALL sound is clipped, including talking. With the Pro-Ears, only the gun shot is clipped, so you continue hearing everything else. This is important at a range, as there are gun shots going off all over the place. With the Pro-Ears, you can continue to have a conversation with someone, without having them clip the vocals all the time. Very nice. They're also sort of expensive.... in the range of $275, depending on model.