Are straw lids or spout lids better for kids?

Reviewers are split. Straw lids (like the Thermos FUNTAINER and Owala Kids) are the consensus pick for younger children because they require no tilting and are easy to sip from, but multiple verified-purchase and community reviewers note straws need replacing and can harbor mold if not cleaned. Wide-spout/chug lids are easier to clean thoroughly but are better suited to older kids who won't spill.