The current Hoover commercial units are junk. A few good commercial brends I have seen and used are Lindhaus, Sanitaire, Euroclean, Pullman-Holt ,Nilfisk, Advance, Kent, Minuteman, Clarke, and Royal. These are just suggestons from personal experience. All of these are high quality commercial vacuums that get the job done without alot of fancy bells and whistles. Some are more expensiv than others such as Lindhaus and Nilfisk. Hope I've been of some help. Matt