Upgrading your truck with a hard-folding tonneau cover will make your bed more secure than your cab and protect your cargo from the elements. Dozens of manufacturers offer hard-folding tonneau covers, but two of the most consistently popular choices are the Extang Solid Fold 2.0 and BAKFlip MX4. If you’re trying to decide which of these tonneau covers is the best choice for your truck, you’ve come to the right place. In this article, we compare and contrast these covers so you can choose the perfect truck bed cover for your purposes.