The answer to this question depends on your individual goals and interests. Differential equations and multivariable calculus are both important topics in mathematics, and both can be useful for a variety of applications. If you are interested in pursuing a career in mathematics, engineering, or physics, then taking both courses would be beneficial. However, if you are more interested in a career in finance or economics, then taking multivariable calculus may be more beneficial. Ultimately, the decision should be based on your individual goals and interests.