I've been doing some PHP development lately (yes, I know, you're probably wondering why I'm not doing Ruby on Rails) and I started to look around for a good PHP IDE. Zend Studio is supposedly awesome, but it's hundreds of dollars. I'll be trying out Eclipse (or TruStudio, which is built on Eclipse) soon, but I heard it's slow. We'll see.

Recently I came across PHP Designer recently & it doesn't seem too bad. It has built in help, context highlight, and (very important for me) statement completion/Intellisense/Code Assist/whatev. It's only a 14 day trial (not 30?), but currently it costs $54.