If you have a DBA that knows MySQL extremely well and doesn't need to change. If you have a existing system running well, and the future roadmap of your develop

If you have a DBA that knows MySQL extremely well and doesn't need to change. If you have a existing system running well, and the future roadmap of your development doesn't make staying with MySQL difficult. I am totally a Postgres fan, but there are many sensible reasons not to upset the apple cart.