Right now we're using ProEars Pro Tac 200s with foam earplugs as well.
With the "doubled up" protection, the NRR of 19 wasn't that much of a problem. What I wanted was something that folded up to fit in my range bag pocket, had an easy to change battery holder (without prying plastic parts with a screwdriver) and had enough amplification to push normal sound levels through the foam earplugs.
And it works. With the gain on the muffs turned up all the way, I can hear range commands just about like not wearing any protection at all.
But when the shooting starts, the muffs clamp and do NRR 19, and the earplugs do their NRR 30, and things are nice and quiet. (I'm aware that NRR isn't additive, but it is definitely quieter than either used alone.)
Now ProEars makes a really nice line of "top end" muffs for $350 or so, with NRR 33, I think. It is possible these might work as a "single" protection system, but I haven't tried them.
It was $200 for (2) of the Pro Tac 200's vs. $700 for (2) of the Gold ones...