They do work fine, but I might not have made clear in my previous post that they're unfiltered - simple tri-flange earplugs that attenuate loud and soft noises equally, so they protect my hearing really well, but of course it's hard to hear someone talking or calling for the target. That's why I tried the Axils, but I felt like the shotgun noise was too loud with them. The reason I started reading this thread in the first place was that I was hoping there was something better.
Not to pick nits, but they don't look the same, they are identical attenuation figures.
This is a little confusing. If I go to your website and buy a pair of Otopro Impulse earplugs off the shelf for $49.99, I don't see a way of specifying different filters.
I understand that you chose a membrane filter, and the membrane filter costs more, and that causes your earplugs to be double the price of plugs with a mesh filter. But I don't really care about the tech inside the plug, I want to know how that affects the user experience - what am I going to hear differently with a membrane filter? My one takeaway from the quote above is that the filter is tuned to make speech clearer. And that's fine, if that's the main difference. If there are other differences (e.g., the membrane filter lasts longer before failing), please let me know. But just saying ours are better quality than those other cheap guys, we're really proud of our tech, you should pay us double, doesn't help me decide to purchase.