Netbeans 7.1, it got css3 support, this is the first release they got those freaking ugly and newbisch dreamweaver like CSS stylers.
I think netbeans will do very much more for a back-end dev, why? because the tools for netbeans are so much faster (in my opinion) and its much more focused on the actual coding, and the beautifull code completion, support for frameworks like ZEND etc.etc.etc
I have never ever met a good progressive back-end dev who uses dreamweaver, so if you are going to focus on code, i prefer netbeans