The best solar cooker is the pizza box in my opinion because it brings in more energy into the box. I would use this in my project. When you place the food In the pizza box the energy comes in by the rays of the sun. This is a good one because it's a easy one to do and it still works. The oven will get around 200 degrees. That is a good rate to melt something. So if you want to make some chocolate strawberries. This is the one to do it. The pizza solar is the best one out there. This is the one I will be using because of the facts I have used.