i've used them all...and can't stand any of them....and find that an old t-shirt tied around the back of your head by the short sleaves works awesome....and you can also have one of those cheapo hospital masks underneath as well. I do alot of sanding and cutting of plaster with diamond blades (and have no problems....) doing remodeling jobs. that dust clogs your facial pores too and a t-shirt covers your whole face not just your nose and mouth. make sure you tuck it in the shirt your wearing though for safety.
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