Do budget merino multipacks hold up against premium brands?

Budget multipacks like Danish Endurance and innotree carry large verified-purchase review counts with solid 4.4 to 4.5 ratings, suggesting acceptable everyday performance at a lower per-pair cost. However, their ratings sit below the premium Darn Tough and Smartwool options, and without independent durability testing in the supplied data, longevity claims should be treated cautiously.