For structural applications, where strength and durability are paramount, choose Plywood or OSB. Use OSB for more budget-conscious projects, but select Plywood if high moisture resistance is required. For painted furniture and interior details, MDF is the best choice. Its smooth, uniform surface is ideal for a professional, flawless finish. For the lowest-cost, non-structural indoor projects, Chipboard is the economical option. Just be aware of its weaknesses, especially its vulnerability to moisture.