I really like how we can create funnels and track events for almost all the activities a user can do on a website. The UI is also good and easy to work with.
To be honest, I like how PostHog has implemented a language learning model (LLM) that I can ask questions to. This is really helpful versus having to spend time learning how all the dashboards work. Since PostHog is a pretty dashboard-heavy product, being able to avoid having to learn all the dashboards and just ask the LLM the information I want to know is great.