If you're looking for an IDE I would look at Komodo, or Zend Studio. You could also look at InteliJ but that's less PHP / Javascript focused then the others.
Personally I find little if any need for an IDE with TextMate. Everything I need handled is handled. If you drop auto-completion and start memorizing function calls (not a trivial task, but better in the long run) it prepares you more for the situations where you don't have access to all the fancy tools you're accustomed to. When you have a bad server and end up using SSH and VI[M] to fix something you actually can.
