Everything you need to know to score the best leather furniture for your needs: At the of Iron & Oak Showroom, we routinely have guests asking for advice or help when it comes to choosing the right leather for their custom furniture project. When it comes to the best color or best finish, that depends on your style, your room, and your inspiration. But when it comes to the best types of leather for a sofa, loveseat, sectional, or chair, we've got a crash course for you: Avoid these if…