When it comes to the subject of dust collectors I'm seeing more and more posts that allude to the fact that these things are somehow supposed to be used to remove health risks.
That is not what a dust collector is for, and it will never work that way.
They should, more appropriately, be called 'chip collectors' cause that was the original purpose, and for the most part remains that way. And this chip collecton has nothing at all to do with health. It's mainly to get the big chunks out of the way and help a bit with cleanup.
Forget all the bullshit the commercial companies put out. Their job is to sell machines and all the crap about health is just playing on your current fad thinking.
All this obsessing about micron sizes and filtration is just that, obsessing.
First you want to get a machine with a high CFM, and then you want to cap it off with a filter that wont let any air thru, defeating the purpose of having the thing in the first place.
And it seems that too many people expect these things to capture every particle of dust thrown by any machine, and keep the shop in a clean, pristine, operating room condition at all times.
The fact o' the matter is that woodworking is a dusty, dirty business. I defy you to find a commercial shop with more than one or two workers that's clean, no matter how many Oneida's or Wood Mag cyclones they have.
So if your main concern is health, get a respirator. If it's just to keep some of the dust down, get one of those overhead air filters and change the filters once a month. If it's collecting up all those mountains of chips and sawdust that a planer, jointer and table saw will throw up, get a 'dust collector' and start calling it a chip collector.
But realize that it aint never gonna protect your health, and it aint gonna do away with the need for you to own and use a broom once in a while.
My two-cents. I'll read, but not respond to, any differing opinions. I'll bet most of them will be at least 99% anal.