I think PHPStorm from JetBrains is the IDE of choice of most PHP devs using IDEs at this point. They completely own the market, and rightfully so (I'm still stuck on Sublime Text myself, but wouldn't consider any other IDE than PHPStorm if I were to use one).

PHPStorm all the way. It integrates perfectly with Xdebug and you end up with an environment almost as good as Visual Studio or Eclipse debugging.