Best Cms & their learning curve

After going through a lot of articles and search have concluded:

Best PHP based cms are (according to rank):

1) Drupal (for everything)
2) Joomla (for commerce and social networking)
3) Wordpress (for blogging)

Best ASP based CMS are :

1) Umbraco (for everything)

Note:

Umbraco and Drupal stand equivalent in terms of power in ma view in their backgrounds.