My favorites
http://www.amazon.com/Earpro-Sonic-Defenders-Foam-Tipped-Earplugs/dp/B00A3I35HY?ie=UTF8&keywords=earpro&qid=1460031759&ref_=sr_1_3&sr=8-3 I like the ep7 as they are the foam tips.
I wear the ep7 with filter open under the howard ear muffs withe volume up. I can hear everything perfectly as if i am not wearing anything but gunshots are super quiet.