If using a stand-up mixer, the paddle attachment is the best attachment to use for the batter & frosting when making cupcakes. I have made cupcakes with people recently that had no idea what the paddle attachment is for! Blew my mind since I use mine ALL THE TIME!!! In general, it works best for creaming butter which means some batters & the frosting. It really incorporates the ingredients well for all batters in my experience. I definitely use my paddle attachment more than my whisk or the dough hook. Ingredients get really stuck in the whisk attachment & the dough hook is for kneading purposes.