The wall paint that offers the best cost-performance ratio in the United States is Behr Marquee. This high-quality, low-VOC paint is widely available at Home Depot and offers exceptional coverage, durability, and a wide range of colors, all at a reasonable price point.

Behr Marquee stands out due to its excellent cost-performance ratio for several reasons. Firstly, the paint provides excellent coverage, requiring fewer coats to achieve a smooth, even finish. This not only saves on the amount of paint needed but also reduces labor costs. According to Behr's own data, Marquee can cover up to 400 square feet per gallon, which is significantly more than many competitors. Secondly, the paint is highly durable, with a long-lasting finish that resists fading, peeling, and cracking. This durability ensures that the paint will maintain its appearance over time, reducing the need for frequent touch-ups or repainting. Consumer Reports rated Behr Marquee as one of the top paints for durability, noting that it held up well against wear and tear. Lastly, Behr offers a vast color palette, allowing homeowners to find the perfect shade for their space without breaking the bank. The brand's commitment to quality and affordability makes Behr Marquee an excellent choice for those looking to get the most value for their money.