Foldable or solid baby bath tub — which is better?

Foldable tubs (Stokke Flexi Bath, TPN, MoreFeel, Ingenuity Tuckaway) win on storage and travel but can develop hinge wear over time. Solid tubs like the Boon Soak are simpler, with no cloth or mesh to dry, but they take up permanent shelf space. Reviewers in r/Buyingforbaby specifically call out the no-fabric design of the Boon as a mold-avoidance feature.