| Floor space | None — it's on the wall | 2–4 sq ft, permanently | None, but the canister lives somewhere |
| Reach | 35 ft of hose from one point | Hose plus a cord you keep re-plugging | Whole house, if you ran the pipe |
| Setup, every time | Pull the hose off the wall | Roll it out, find an outlet, unwind | Carry the hose to the nearest inlet |
| What you handle | A soft hose. The 9 lb unit never moves. | A bulky 20–30 lb drum you tow behind you | A long hose to carry and store |
| Near your paint | Nothing rigid ever reaches the floor | A hard shell on casters, right at rocker and door-edge height | Nothing rigid on the floor |
| Can it tip? | No — it is screwed to the wall | Top-heavy on a narrow base, on a floor that slopes to the door | No — the canister is fixed |
| Where it lives | 2½ ft of wall, above the bumper line | Wherever it was last pushed | A closet, the attic or the garage corner |
| Filtration | HEPA-type, rated to 0.3 micron | Often recirculates the fine dust | Varies; usually vented outside |
| Installation | Four screws. Ten minutes or less. | None | Contractor, wall work, days |
| In a finished garage | Looks like it belongs there | Looks like the jobsite it came from | Invisible — that's the appeal |