I also had some custom molded ones. The first ones I got (in 2002 maybe?) were like Justmund's in that they didn't stay in my ears very well once the juices started flowing. Then I lost one after a gig, and I used one custom one plus one foam one for years. Finally I got another one to replace the the lost one and it fit better and stayed in my ear better, but it was through the same hearing place so I don't know if they switched brands or what. Unfortunately, that one got lost too. That's when I started using Hearos, the blue extra large foam ones. I have big ear canals compared to most molds I have seen, the Hearos are the only foam ones that actually seal into my ear.
I have gotten to the point that in spite of wearing earplugs since I joined my 1st band 20 years ago, I still have issues including tinnitus and rattling when the bass frequencies really kick in. If I don't have just the right seal, my left ear will rattle, so everything will be quieter except my ear is rattling so I can't hear anything very well. As long as the seal is good, I can hear everything well at a reduced volume. It's harder for me to attain that seal in my left ear, so frequently I will get it correct, then leave it there all night.
While I don't go to stadium type shows often, something in-between nothing and the 33db reduction of the blue Hearos would be nice for that situation, for when it's just a little louder than I would prefer but not as loud as like our band in a small bedroom.