Compare Quant UX alternatives using a real study from participant recruitment through analysis. Check prototype fidelity, branching, task metrics, survey logic, moderated and unmoderated modes, collaboration, consent, data export, localization, and accessibility. Confirm participant limits, storage region, retention, deletion, and current pricing. Evaluate how raw events and recordings can be audited rather than relying only on dashboards. Pilot with internal participants before migrating active studies, and preserve research artifacts and identifiers for a reversible transition.