If you need a comprehensive tool for product analytics with features like user replays and experimentation, go with PostHog. It's great for product teams and SaaS builders who want in-depth insights and are willing to manage a broader learning curve. Just be mindful of event volume, as costs can increase significantly if your usage grows.
On the other hand, if you are a solo creator or small business looking to streamline social media management, Buffer is your best bet. It offers an easy-to-use platform for scheduling posts across major social networks and has a decent free plan. However, if you're managing multiple channels or require advanced analytics, you might find Buffer's costs rising quickly, so consider your needs before committing.