Roto-Zip..............Just a mica router with long shank spiral bit and a flush guide. No big deal. And messy like a hurricain in a flour bin. 9600 RPM Dremel tools have their place I suppose, Not a true variable speed because you have to dial up a speed in most models. Also Dremels tend to vibrate very significantly as they wear. For real material removal in smallish places a variable speed Fordham flex shaft is tops. Not as fast because its variable speed will a foot pedal but with infinately more control. A little thinner and not quite as long as a Dremel but a Fordham Flex shaft fits more places comfortably and with the right lubrication will operate for hours.

Bonnie, buy the drill first. Dewalt would be my choice but which ever one you buy, get a second battery too.

Don