You need to find out which of your or your competitor’s pieces of content perform best on social media. Which Social Media Tracker report allows you to do this?

The "Top content" report in Social Media Tracker is designed to identify the most engaging posts from your profiles and your competitors' profiles. It shows metrics like total shares, likes, and comments, allowing you to see which content resonates most with audiences. This directly answers the need to find best-performing content on social media. The "Social channels" report provides an overview of performance across different platforms but doesn't focus on individual content pieces. The "Comparison with competitors" report offers a high-level comparison of overall social media presence, not specific content performance. Therefore, the "Top content" report is the correct choice for this task.