What are the key differences between a random orbital sander and a sheet sander, and which one would be more suitable for my woodworking projects?

A random orbital sander moves in a circular and random pattern, reducing swirl marks, while a sheet sander moves in a back-and-forth motion. The random orbital sander is more versatile and suitable for various woodworking projects due to its ability to provide a smoother finish with less risk of leaving visible sanding marks.