I have been using the Deep Sweepy most of the time but I have been cutting 3.5 thk pine recently and the Deep Sweepy has been an issue at times.
I have had to adjust my hose hanging to allow for the hose to fully collapse if it gets plugged up too much. I lost two pieces recently, so I have been much more alert to the vacuum.
I am using a 6 gal Stealthsonic.
I tried the Short Sweepy and it collapses the hose due to lack of air flow.
The difference between the units is 1 sq in at the transition between inlet and outlet.
You can hear the vacuum working harder with the Short unit, as well as being louder a the spindle.
So I drilled 12 ( eye balled with one eye ) .330 diameter holes ( that was the drill currently in the drill press ) which gives me another 1.02 sq inches of are for the air.
Here is what the Short unit does to the hose if I mask off the new holes.
Here is what 10 holes did for the Short unit. I have added two since.
Here is the Deep unit.
Here is no Sweepy.