As far as Peltor's are concerned, I have two models of their electronic protection. I have the Tactical 6S and the Comtac. The 6s is great for range work and so forth. The Comtac is better suited to more aggressive oriented activiites OR those who want the ability to tie in radio communication with their hearing protection. I have also owned a set of the Pro-Ears and feel (IMHO) that the Peltor stuff is better.
Bottom line:
If you want a great set of electronic muffs for the range/competition use, get the Tactical 6s or the larger Tactical 7 Pro model;
If you want "can't bust 'em" toughness for high-speed training (a pistol/carbine course, for example) or for commo compatibility, get the Peltor Comtac.
Do a Google Search on these two models for further info and pricing.....