Hey Lee..... I have a Craftsman version of your air cleaner. Not as good as yours, but basically the same thing. I find it great for what I use it for. When sanding, especially using my drum sander (even with DC hooked up) I turn the unit on and it will clear up my shop in less than a minute, if I run it while sanding, no worries what so ever. Same thing while using my bandsaw. There is always a certain amount of wood that's gonna get airborn and these things do a fine job of filtering it out...very pleased with mine.
Mine has the metal screen then a cloth filter. The metal filter cleans up easy enough, the cloth bag is a pain in DA BUTT to clean up...but I figure the more that gets caught in the filter and bag, the less that gets caught in my lungs....I think you'll like it alot!!!
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Skipper the Penguin