Size: 6-quart (13-inch diameter)
Make sure to...buy a pan with a smaller, "grab" handle opposite the long, main handle. Because these pieces can weigh nearly 7 pounds (empty!), you'll probably need to hold on with two hands when putting it in the oven or bringing it to the table. The little handle should be big enough that you can grip it while wearing an oven mitt.
But don't...get a pan that's too big for the burner element it will be used on. While a large pan is undoubtedly useful, if you buy one that's out of proportion with your stove, you'll constantly be moving food so it cooks evenly, and will have trouble fitting two more pots (e.g., for a vegetable and a starch) on the cooktop alongside it. Measure the diameter of one of your stove's grates (or heating elements if you have electric) before you shop, and don't buy a pan that's more than an inch bigger across.
Try this recipe: Chicken Piccata-ed or Plain