Yes i switched to drupal from wordpress, still use both im on shared hosting on both, what i seen is if you configure your htaccess and place nginx front of php instead of apache drupal flys even on shared with low ques on database, and iam on godaddy hosting which isnt really the best lol love drupal and wordpress, joomla is kinda ehh my new favorite is Yii Framework its amazingly fast and easy as a person that dosnt like to code toomuch :)