Have 2, one with bag,the other with .5 micron Wynn canister filter. They both have chip collectors, one cyclone, the other the Rockler connectors in a 30 gallon fiber drum. The both connect to one machine at a time. If I were buying a filter now, it would be one with a "beater bar" that knocks the lodged sawdust off the inside of the filter. And yes, they are on sale frequently, and if they have a 20-25 percent off coupon, the price drops into the $160 range. These are really will packaged, btw.
The more I do, the less I accomplish.