After trying out both the Dustopper and Dust Deputy, I've settled on the Dust Deputy. I use it with a 6.5HP Ridgid vacuum and it will primarily be used with power hand tools.

I'm curious, for those of you who use the Dust Deputy, what's inside your Shop Vac? Filter, bag, both, neither? I'm thinking about picking up the Ridgid Hepa filter for this setup. Anyone have experience with that? Thanks!