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My mask of choice are the KN95s by Powecomm available from http://www.bonafidemasks.com, which are the best price I've found on legit KN95s (and I think I owe this to someone here, who posted about them, so thanks). However, early on during the pandemic I was wearing some pretty good cloth masks I also picked up online, but I notice the inner filters with most masks are PM 2.5 filters, which are great for shutting out dust and such, but coronavirus microbes are much smaller than that.
Someone recently told me about Filti, which manufactures and sells U.S.-made masks and filter inserts that just blow away the PM 2.5s. I am a huge fan of the high efficiency inserts they sell, which filters up to 95% on sub-micron particles, including bacteria and viruses - and now make the cloth masks I own at least a little closer to the efficiency of the KN95s.
I like 'em, so I'm passing on the word about them. If interested: https://filti.com.