Numatic more than henry the difference between the two bin size the environment used in and filtration I prefer Numatic it's used in the commercial environment as henry is domestic the Numatic has more tool slots 4 henry 2 the numatic and henry uses micro filter or hepa filter depending on what task its designed for bigger means less emptying the newer numatic and henry use brushless motor which generate a higher air flow and cfm use hepaflo bags not paper paper bags loose 25% of the dust collected and it ends up in the filter hepa flo bags have a very high dust retention basically in English as the vaccum bag fills it retains all of what it collects and the filter stays cleaner for much longer