Well, they're pretty much all junk, as far as I'm concerned. If you
need a jigsaw, then buy a jigsaw. Rotozips and their ilk were high on
the list in the "most useless tool" thread recently.

BTW, you'll want to be extra careful with that Rotozip and outlet
boxes, particularly if you're doing the wiring. YMMV.

-Phil Crow