The ease of use, scalability, performance and support are my favorite aspects. I have used Oracle RAC in previous projects but this was not easy to set up or troubleshoot since there were many components involved. With Versant we did not need to worry about any of those issues as it has been very straightforward to deploy our database with just one click. So far everything is working great. Nothing so far that I would dislike. We needed an ORDBMS solution that could scale well without having to rely on expensive hardware solutions like Oracle's Exadata platform.