Jello wrote:

I’m often asked, “Do you prefer PostgreSQL or MySQL?” My answer is always the same: “It’s a matter of preference.” You could ask many developers the same question, and their responses will all be different. Here is a comparison of MySQL and PostgreSQL databases, offered not for the sake of voicing my opinion, but to help you make your own decision.

He spent a full article saying what my initial reaction was :

It's not a matter of preference, it's a matter of application..

MySQL is faster, but less featureful and compliant.
PostgreSQL is slow but is closer to ANSI compliance and has more features.

Like any tool, in any domain, use whichever one best fits the application at hand.

RE: MySQL vs. PostgreSQL