Zend Framework Dependency Injection vs Symfony2 Dependency Injection

Question

I've been using Symfony2 DI a lot for some of my projects recently, and just started trying Zend DI. What I can see is SYmfony2 DI is a lot better than Zend DI as it also provides the following features which don't exist in Zend DI:

• Configure the services using XML, YML, PHP,...
• Tag feature
• Event/Dispatcher

Please correct me if i'm wrong?

Answer 1

• AFAIK zend DI can be fileld from any format that can return an array (XML, INI, YMP, PHP, NEON, even CSV maybe :D)
• what does that do?
• ZF2 has a powerful EventManager and Dispatching is also set up in the DI config - anything implementing Dispatchable interface can be dispatched - but I can't see how Events and Dispatching relates to DI implementation.