I have one of the Harbor Freight $20 units I have been using for about 5 years now. Most used tool in the bin! I’ve used it for electrical cut outs, plumbing pipe cuts (plastic and copper), notching out door jambs for tile to slide under (laminates too), cleaning up cement residue after removing tile, sanding my wood projects, and a lot more. And when it quits working I’ll go buy 2 more!