Thats the thing, Glock-a-roo recommends the 9211 and Redflare recommends the 9210. Looking at the 3M site, they have over 20 N95 masks. From what I can gather on the differences between 9210 and 9211 is that the 9211 is individually packaged. Does it offer any additional function? I see there's a filter type contraption on the 9211, what does that do?

I guess my real question is, filtration wise, are all N95 masks the same thing, but just have additional bells and whistles (cosmetics / quality / comfort)?

At this point the 9211 looks appealing.. Anyone recommend a place to buy?