I have only used NetBeans and Dreamweaver for PHP, and at the moment I'm sticking to NetBeans as it's cross-platform. I have voted, NetBeans' voting system is quite clunky though.
I agree that Netbeans is much much better that PDT. The only issues I have is that I can't disable SVN and I can't debug CakePHP files (can't setup the debug parameters for a remote Apache server). I hope these issues will be resolved in version 7.0