Oscillating tools are a specialty tools. I like the Porter Cable quick blade change method, it's simple, quick and holds the blades without slipping. The variable speed makes using it more versatile, and the cordless design makes for ease of use when a power outlet is not close by. There is a rubber covering on the housing that provides a slip-free grip, and a LED light for illuminating the work area.  I have used this tool to cut heavy plastic, which worked well.  Using a slower speed, it can cut plastic without melting the cut line. This is a nice tool for some applications.