Choosing between a 2-seater and a 3-seater sofa ultimately boils down to your specific needs and the space you have available. A 2-seater sofa, being more compact, is perfect for smaller rooms or as an additional seating option. On the other hand, a 3-seater sofa, offering more expansive seating, is better suited for larger rooms or for families who require more space. Consider your requirements, your room's size, and the existing furniture layout to make the best choice.