Postgres has earned the reputation for doing thinking features through, rolling improvements out reliably, and is pretty committed to doing things right (tm). T

Postgres has earned the reputation for doing thinking features through, rolling improvements out reliably, and is pretty committed to doing things right (tm). This has meant fewer/slower hot features in the past, but solid when they arrive. It feels like they've pulled ahead in many features now. My favorite is all the indexing options. It may be undeserved now, but MySQL had/has a reputation for a lot of sloppy work for good enough features or for performance. Mysql dropped MyISAM for InnoDB in an effort to undo some of that damage so it's hard for me to say they're not committed to quality now. But reputations take time to rebuild.