I like ear plugs, the foam ones. Dirt cheap, and now I try to keep one bag of them in the garage, one in the basement. Eventually a third will make its way into my range bag. From what I can tell, they are effective enough. I can usually hold a conversation with them in place. Too cheap to not have. These days I wear them when working on my car, my electric impact that I use to remove lugs is too loud for me--pop in a pair and go to town (unfortunately I can't hear the radio with them in, that's a bummer).
Just don't let them go through the wash, they don't see the same afterwards...
Are you shooting indoors and/or high power / short barrel stuff? I've heard of people doubling up, like earplugs plus muffs, when doing so.
Another plus for plugs is that I can wear them with a hat, winter or wide brimmed. I did buy a set of electronic muffs to try out, but have yet to warm up to them, probably because they are a cheap set and sound "tinny".