Through the most scientific and Extreme tool testing comparison which includes, vacuuming sawdust from low pile carpet, vacuuming sand from rubber jobsite style mats, and a water pull test. We answer which M18 powered wet/dry vacuum is the best Milwaukee M18 Cordless 2 Gallon Wet/Dry HEPA Vacuum (0880-20) or Milwaukee M18 FUEL PACKOUT 18-Volt Lithium-Ion