is Laravel framework stable enough for medium size project or should I stick with more stable Yii? [closed]

Never stick to anything. The internet is dynamic, so the question should be:

• Is laravel the Framework of my choice?

Laravel 3/4 for CMS Framework? Yes, why not.You don't know its stable enough? Many developer sends pull requests. Do it also and make it stable as fast as possible while create your cms project. :)

Originally I like Zend Framework and Symfony.Laravel is not a performing monster but it is easy, light and flexible as I already feel in practice.

Laravel 3 is rock solid and used in many many production systems. Laravel 4 is beta but about to be released in a few weeks and many people are also using that in production situations with out any issue what so ever (me included).

I'm not sure what you mean by lack of leadership - Taylor Otwell, the main developer of Laravel is very committed to keeping the software updated and is a very strong figure in the Laravel community. There is also a very active community of individuals who both offer support as well as contribute code to the core framework. So while its true there is only one 'leader', many people can and do contribute in a lot of aspects.

Additionally Laravel 4 uses Composer components for many of its core features, for instance most of the session, routing and core http code are actually Symfony components. Thanks to composer Laravel 4 is in a very strong position to stay current with any future developments.

If its between YII and Laravel, I'll probably stick with Laravel. Yii is good but Laravel can do better than it.

But personally I'm rooting for symfony. Its powerful and yet much less complicated to learn than Zend with symfony's proper docu