I have the Peltor non electronic ones, and I like them, but, normally, I only use earplugs. I will use them shooting magnum pistols and rifles. The only problem, and I have it with all the earmuffs I've tried, is checkweld. No matter the kind, I always end up with them hitting the stock. It's not as bad with a shotgun or a standard wood and steel rifle, but ARs they contact, and my Tavor, you can forget it.
If I could afford a really nice pair of custom electronic earplugs I would go that route.
If I had to shoot inside for a competition, then I'd find the smallest cups I could.
The Peltors I have are sculpted to help, but some rifles and the maybe the way I am behind a rifle, it doesn't help enough.
BTW, mine are the 3M Peltor 97008 . About $20.00, and mine are black. I'm sure a more expensive pair would give you a better fit.
I do like them better than the standard over the head ones.