This is a difficult question to answer because there are so many variables involved. The best wood for cabinet doors depends on the desired look, budget, and intended use of the cabinets.
Some of the most popular woods used for cabinet doors include Maple, Cherry, Oak, Alder, and Hickory. Each one has its own unique grain pattern and color. Maple is a light-colored wood with a smooth grain, while cherry has a rich red hue with a slightly more irregular grain. Oak is one of the strongest woods available and has a classic look with its prominent grain. Alder is similar to maple in appearance but is more affordable. Hickory is another strong option with an interesting mix of light and dark colors in its grain.
When deciding on the best wood for your cabinet doors, it's important to consider how they will be used. If you need durable doors that can withstand heavy use, then oak or hickory would be good choices. If you're looking for something more budget-friendly, then alder or maple might be better options. Ultimately, it comes down to personal preference and what will work best for your specific needs.