Mahogany is generally considered better than oak furniture due to its durability, beauty, and rarity. Mahogany is a dense, heavy wood with a rich, reddish-brown color that darkens with age, making it highly sought after for high-end furniture. Oak, while also a durable and versatile wood, is more common and less expensive, which can make it a more practical choice for many consumers.

Mahogany's superior durability is due to its tight grain and high oil content, which makes it resistant to moisture and insects. This makes it an excellent choice for furniture that will be exposed to varying temperatures and humidity levels. Additionally, mahogany's natural resistance to warping and cracking ensures that it maintains its shape and appearance over time. According to the Wood Database, mahogany has a Janka hardness rating of 2200, which is significantly higher than oak's 1290, indicating its greater resistance to wear and tear.

The aesthetic appeal of mahogany is also a key factor in its superiority. Its rich color and grain pattern are highly desirable, and it can be finished in a variety of ways to enhance its natural beauty. Oak, while also visually appealing, has a more subdued color and grain, which may not be as striking as mahogany's. Furthermore, mahogany's rarity adds to its value and desirability, as it is not as widely available as oak.

However, it is important to note that the choice between mahogany and oak furniture ultimately depends on individual preferences and budget constraints. Oak is a more affordable option that offers excellent durability and versatility, making it a practical choice for many. Mahogany, on the other hand, is a premium choice that offers unparalleled beauty and longevity, but at a higher cost. According to the American Hardwood Export Council, mahogany is one of the most expensive hardwoods, which can significantly impact the overall cost of furniture.