Ask HN: How do you compare Dgraph vs. AragonDB vs. Neo4j?

I want to choose a graph database but I'm not sure which of these 3 (or even more) is a good choice. I want to use community (free) version so I don't want a comparison between enterprise versions. As I see, Dgraph's stars is much higher than 2 others. It has 17k stars while Aragon has 11k and Neo4j has 9.6k. But I think Dgraph is not mature enough to be used. Is this true? I want to see your comment about any graph database, especially one of these 3.