Building my steamboat, bought the FEIN vibrating saw tool for $350. A few months later, the FEIN monopoly (probably a patent expired) ended and Dremel had one for $100, and Harbor Freight has them for under $20.
So I bought the HF vibrating saw and used it without mercy in boatbuilding. Plenty of plunge cutting with weird angles in boatbuilding, hard and soft wood, cutting off screw heads occasionally, etc. Burned up one of the HF tools in a year. Not as good as the FEIN, but considering that I can buy about 20 of the HF tools for the price of the FEIN, the HF tool is a very good bargain. I don't worry about dropping it, or forcing it, as they are so inexpensive, and do the job.