I wasn’t sure which size I should buy - and after much (way too much) deliberation, I went with the larger size. Setup is even easier than the instructions indicate. And everything fit perfectly into my old Rigid 5gal wet/dry vac. I also set up a Rockler 2.5” flexible hose to attach to the tool in use.
All fit easily and perfectly. My only complaint about setup is that the hose from the unit to the vac is just a hair too short to allow me to stack the units on top of each other (want to build a rig to keep them stacked and out of the way).
Ultimately - I wanted this to save on cleanup. And it tackled this task amazingly well! But more so it keeps ALL the dust out of the air (and subsequently my lungs!). The whole area feels and smells cleaner. And cleanup is now a 1 minute job - instead of the 30+ mins it used to be (AND sawdust doesn’t get literally EVERYWHERE!!). Not to mention: the vacuum bin is spotless!!
Final note. Get the full setup with the translucent bucket. Sure - we all have 5gal buckets lying around - but being able to quickly see how fast it’s filling up is both handy (and gratifying if you like watching that sort of thing! 😉)