I used to use the Walkers but got tired of the foam tips getting all grimey and not getting a real good seal.
I invested in the Westone custom molded DefendEar® DigitalX (DEDX) electronic ear plugs. I contacted the Product Manager, Jeff Ipson (jeffi@westone.com), and got a significant discount off of the retail price. They are pricey, but man, do they work well. The mold looks like the firm silicone plugs we have all had made while at a match...but theirs are a little harder and have a hole set up to take the electronics. I got the model 3 that has the "game mode" allowing me to easily hear people talking but protect my ears when the guns go off. The volume control is very good and I have it set on the low end. If I want it quieter because I am in a building, I can just turn off the electronics and it does a great job of blocking out the noise. They are really comfortable and pretty much don't feel like anything is in my ear.
What is really nice is the electronics is separate from the ear mold. Over time, if your ear changes size, you can just have a new mold made and don't have to bother with replacing the electronics. They use a standard hearing aid battery. They will ask you to visit an audiologist to get ear molds made and you send them to Westone...they make your molds from those sample molds. To learn more, go here: https://westone.com/defendear-digital-features.
If you want to reach out to them, tell Jeff that Scott Sweet, fellow cowboy shooter sent you... he has no idea who Montie Montana is :)...maybe you can get a discount too.