The Battle Between Excel and MathCAD

What tools do you use to craft your calculations? Do you use MathCAD because it is precise? Or do you use Excel because you can? Is one faster than the other, or better? I am Excel user and a practising engineer. Whatever you use, is it appropriate? For most engineers, in the battle between Excel and MathCAD it is a blurry. In the hands of a master, Excel wins. Learn how you can do that.