"...these small extractors will not clear all the different types of machines.."
Hmmmm...beg, respectfully, to differ Mike.
I have used both types for donkeys' years; I find - as you hint at later in your post - that air flow path is crucial. See Siggy 7's excellent notes on same. I have Woodbloke's old APTC sucker on my P/T and table saw.
It's only 1hp, but...because I use a minimal length
100mm hose and am careful about porting, I get ALL my chips picked up.
Your "2400watt Numatic".... was that by any chance fitted with a
63mm hose as most of the catalogue pictures show? NO WAY would I hitch that to a planer or tablesaw. It would choke up P.D.Q. with the sheer volume of solids ejected.
I've owned three of the Record/Rutland's 'dalek' style vacuum-cleaner-on-steroids extractor and even with a good big 100mm hose (and the odd adapter for hand power tools) they all needed a separation phase as the bag clogs and the filter can get hammered by P.M. (from about 1-2micron up?). A good solution is again, SHORT hose, straight as possible, and use a cyclone (preferably) or Thein baffle (only 90% efficient?), upstream from the dalek.
I emphasise, I am a hobby woodworker, and so would withdraw my remarks for a high-volume professional cabinetmaker, as their requirements would wreck my amateur gear in a working week or perhaps even day.
I think there is a great temptation to throw horsepower - and by implication, dosh - at a problem. But, "It ain't what you got, it's how you use it." - the old, proven, photographer's adage.
I'm off now to cadge a few McDonald's fat straws for my Dremel outfit....
Sam