Is softside or hardside luggage better for checked bags?

Reviewers consistently note that softside bags expand more, absorb impacts by flexing, and offer external pockets for last-minute items, while hardside cases resist liquid spills and look newer longer. For checked use specifically, specialist subreddits like r/onebag and r/ManyBaggers tend to favor softside from Travelpro or Briggs & Riley for serviceability and zipper repairability.