My search for a good PHP IDE never stops 😉 My choice was Zend Studio until recently. But Zend Studio is not free and it’s free analogue – PDT – lacks some features like refactoring (PDT is also mainly developed by Zend, so, I think, Zend will always keep it low to prevent competition with Zend Studio). Also, it is monstrous (More than 300Mb installer) and it definitely lacks good Symfony support.
Recently I came across NetBeans, which is now free and developed by Sun. Sun seem to abandon all own IDE projects in favour of NetBeans, so this is a somehow strong foundation.
Oh… 25Mb installer only for PHP version 😉 And… it is easy to use. Very. I would like to guide you through the creation of new symfony project in NetBeans.