Are stainless steel ice rollers better than gel or plastic ones?

Reviewers are mixed. Verified-purchase reviewers on Target and discussion on r/beauty say stainless steel feels great and stays cold longer than plastic, but lifestyle testing at people.com noted at least one stainless pick didn't hold cold as long as competing steel rollers. If long cold-retention matters most, look specifically for thicker stainless steel and freeze it overnight.