MySQL or Postgres

Could someone please point me in the correct direction for a decent comparison of the two in respect of:- Reliability Scalability Speed Functionality These are actually in order or importance to me (I know both are fairly fast). I am also interested in how easy it would be to migrate from MySQL to Postgress. Proples general experiences/comments also welcome. Beb **************************************************************** * Ben Edwards +44 (0)117 968 2602 * * Critical Site Builder http://www.criticaldistribution.com * * online collaborative web authoring content management system * * Get alt news/views films online http://www.cultureshop.org * * i-Contact Progressive Video http://www.videonetwork.org * * Smashing the Corporate image http://www.subvertise.org * * Bristol Indymedia http://bristol.indymedia.org * * Bristol's radical news http://www.bristle.org.uk * * PGP : F0CA 42B8 D56F 28AD 169B 49F3 3056 C6DB 8538 EEF8 * ****************************************************************