I like that EDB Postgres Advanced Server scales well. It also gives you production features similar to what Oracle provides, but one valuable feature of the solution is multi-tenancy support.

Another valuable feature of EDB Postgres Advanced Server is that it supports JSONB.

• Variant server configuration: not requiring the same release on all.
• Effectively allowing us to be far more flexible from architecture to production, and the overall support model improves drastically.

Cost/benefit wise Postgres is a great solution. It's a very fast database and — in terms of licensing costs — it also provides a significant TCO reduction compared to Oracle. In terms of specific features, deploying Patroni cluster with PostgreSQL we can achieve full HA capability for mission critical applications.

The part of the product that I find most valuable is using it only for small tables and databases that are not very complex. That is all we need it for although it is also valuable because of the low cost.  

The backup utility tools such as pg_restore and pg_dump are really convenient and efficient tools to handle backup and recovery.