IMHO, Dreamweaver is the worst thing to ever be in the same sentence as PHP.
I love Zend Studio and I all use it for is editing (no debug tools, profiling or any of that) ... I don't like Zend Studio for Eclipse, that just me.
When I don't have ZS, I prefer to use PSPad, which is just a text editor with syntax highlighting.
But as you'll come to find out, to each their own.