I would agree there - I have been using the cheap disposable masks with the stiffen top to fit snug around the nose and cheeks - work reasonably well with little of my breath escaping around the sides and my glasses do not fog up so a good sign the mask is actually sealing.
Wanted a washable cloth type and found one that had replaceable filters - hmm these must be good so I buy one and three filters - utter crap - unlike the cheap disposable ones there is nothing to seal around the nose and the filters are too dense to allow air to pass through - the result is that when you breathe out the air just goes up and out the top not through the filter - glasses are completely fogged up.
N95 masks are the way to go but at about $5 for a single use mask the cost is a bit much - so I will stay with the blue single use masks at about 50c-80c each. Clearly not as good as N95, but much better than cloth masks.
Oh and have you noticed how the grubs are now just throwing used masks on the ground instead of the bin or somewhere else safe and sound.

