PG -v- MySQL

Hi:

I work for a large corporation that uses many different databases. I
used to use Oracle but then moved away, mainly because of the expense
and complexity. I wanted to stay on Linux, so I shy'ed away from
SQL-Server. Many others around here use MySQL, but I decided to go with
Postgres because at the time, it had more features and seemed more
stable and robust. I've been very pleased with PG so far.

I've been invited to participate in a forum which discusses technical
issues for relational DBs used in the corporation. The 3 DBs they are
discussing are Oracle, SQL-Server and MySQL. I'd like to introduce PG,
but want to be able to address the "Why not use MySQL" questions when
they arise. I know in the past there have been many comparisons between
the 2 DBs but would like to know if there are any good, recent ones.
Also, any "off-the-cuff" comments would be welcome, especially if you
have used both DBs.

Thanks in Advance

-dave