This all depends on what you are baking. For example, a glass baking pan is incredible for beginners as you can see the process! It allows you to check on the crust and the bottom of the pie, so it's beneficial in the visual area. Also, glass pans are mainly used for lasagna, casseroles, mac and cheese, baked potatoes, and similar dishes as they are easy to clean afterward. Plus, most of them are dishwasher safe. With metal pans, you will get safe results with any of the baked goods. They disperse heat evenly, and most of them are non-stick and are relatively cheap, whereas glass pans are higher in price.