IDE de PHP para Windows

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@r.santos: Muito bom esse link!! Já deu para tirar umas conclusões

Citar:Still not using IDE? You may be wasting time. Try it. You’ll see the difference.
Both PDT and NetBeans are good. If you need a lot of plug-ins, Eclipse is the better choice. If editing tools and code completion are more important to you, then pick NetBeans. NetBeans is a bit more responsive, too.
If you are mostly editing HTML and CSS, try Notepad++, vim, TextMate or Emacs. They all have very good HTML editing capabilities and can be configured for simple code completion. And they are faster and lighter than fully featured IDEs.
If you are editing complex JavaScript, try Aptana, which is amazing for JavaScript, or the Spket plug-in for Eclipse, which has nearly the same features.
And remember, IDEs are not meant to change the way you think. They simply speed up the development process.

Vou tentar o PDT 2.0, mas também vou pela tua recomendação: phpDesigner

Já digo alguma coisa...