the only things that make dust in my shop are the 14 in bandsaw and a 6x48 belt sander. i have a fan in the wall behind the beltsander. i also have a grizzly dust extractor connected to the sander. nothing is connected to the saw. also have a overhead dust extractor. stilll getting fine dust that goes 10-15 feet from both tools. SO, i was wondering if anyone has any experience with the Festool brand of dust extractors; or, would i be wasting $$ ??