We are a multi-model database, which is not in a strict sense a competitor but is competing with Neo4J in some areas. Therefore I'm definitely not a Neo4J expert. However, I'm now working in the field for over 15 years, developing in-memory solutions, databases and application servers. Developing ArangoDB for almost three years and I have talked to a lot of people in that area and to people who are using Neo4J. There are always obstacle when moving to new products. But most of the people who I met are quite happy with Neo4J.