Design comparison is a structured evaluation process in which research teams assess multiple study design options side by side, weighing factors such as method type, sample size, moderation approach, timeline, and analytical depth before committing to a single approach. In qualitative research, design comparison often involves choosing between depth interviews and focus groups, between moderated and unmoderated formats, or between single-wave and longitudinal structures. The goal is to match the research design to the actual decision it needs to inform, rather than defaulting to a familiar format. Rigorous design comparison reduces the risk of generating findings that arrive too late, answer the wrong question, or cannot be defended to senior stakeholders.