I used this CMS for some time now.It provides functionality similar to Joomla,but has built in security since the beginning.It also has a wide range of languages and extensions.The models are based CSS,which means that flexibility.
I think there is no such thins as *THE* best CMS. There is one that is best for one purpose and not so best for another. FYI, Joomla and Mamboo are almost the same things still Joomla, is the most popular of the three.
Drupal is good and very flexible. Drupal is a nightmare to use - and indeed, although we can say that is very functional, which takes too much third-party modules to make it work. This is an obstacle, not a feature. Try adding simple images. There are many modules to manage this simple task that cannot be more simple. Drupal is preferable, a second is Joomla.
From my experience you can not term Wordpress as a proper CMS! because it is still not enough secure for big sites however Joomla is far better and technically holds much more than Wordpress as CMS
I am suggested Drupal, because Drupal is SEO friendly..
and user friendly.These Drupal having very good admin control panel to maintain whole your website.. we don't need to about drupal, if we know about html we can access easily..
Depends on your need, its hard to say which is best. IF you are looking for a blog then wordpress , if you want a website then its joomla , even drupal is better