The problem with plugs, is that you can't hear much while wearing them, and as a result, many pull them out to talk and inevitably, expose themselves to loud noises as a result. As a PMI, I have literally spent hundreds of thousands of hours around firearms; both outside on a range, and indoors. Plugs work, but they are not the end all, be all, solution. Electronic muffs encourage constant usage and consistent protection. Plugs alone, do not.
This is coming form a middle aged guy, that does not have tinnitus because I recognized that while plugs offer greater protection when worn, often times, most don't wear them all the time because of their constraints. Audiologists are always surprised when I tell them my back ground, and they remark on how little hearing loss I have had (virtually none for my age). Get some type of muffs (preferrably electronic) and double up with plugs if needed (like for indoor environments). Economy should not be a high priority when it comes to your hearing.
JMTCW....