Remember for most normal home woodworkers a 3 or 4 hp dust extractor of any type is completely rediculous, on the basis of electrical demand alone.

Due to practicality most of us will be limited to a 2 hp dust extractor and making the best of it.

Likewise for most of us, captruring "all the dust" is little more than a fantasy.

The enevitable reality is that most of us will continue with other methods such as ventilation and dust masks to supliment worthwhile but less than ideal dust extraction.

Go get your 2hp extractor, chose well and make the best of it.

cheers