Howard Leight Impact Sports have been my go to emuffs for 3 years now. Battery life is superb. I really never use them without earplugs, so I can't review them alone, if you know what I am saying. It's just too easy and good combination for me. Before that I used Caldwell emuffs, that are still quite serviceable, but battery life is not great. Some reviewers have had the circuits die. Mine seem to be doing fine after 7-8 years or so.
After trying a bunch of disposable ear plugs, I decided to try some (free sample!) 3M Skull Screws - 32dB. I really thought they are a gimmick. But by far (for me) they fit the most comfortable, easy to REMOVE, and they really cut the CRACK alone better than others. So I bought a box of 120 pairs without strings.
Now WHY the combo?
1) Ear muffs almost work alone but just don't seal all the gaps in your head around your ears. I have a nice bald patch going on, and keep my hair high and tight - so I pretty much always wear a hat when shooting. Hats interfere with muff seals.
2) Good plugs almost work alone.
3) E-muffs have been pretty darn good for the last 10+ years. I almost always talk to folks at the range. Our church gun group would be no fun without banter.
4) Still I may get the best regular muffs for ultimate sound deadening when shooting high power alone, and wear those with plugs. My ears are OK at 57, I have lost just a little. When we went shooting with my dad as a kid he gave us cotton plugs! Luckily it was mostly all .22. But that and amplified music have cut some tiny bit of ability at some narrow frequencies ranges.
5) I'm going to check out molded plugs, those look nice. Easy removal is important. One time I had to go home and have my wife fish one out!