Sure Zend Studio has a long list of features, but many of them add more to advertisement then to coding productivity. And this horrible design... if its a professional tool, it's supposed to be ugly, they say? Not on macintosh.

It's certainly very possible and feasible to code large projects without it, contrary to what the bots here proclaim. I'm using currently TextMate editor, and I find it more helping then this studio. Actually, vim is quite enough for anything you really need.