User Input, htmlentities, htmlspecialchars, fckeditor

[WorldDrknss]

there are many threads that dicuss htmlentities vs htmlspecialchars. I know what each one does but would like to gather some people opinions on which should used it cases.

 

Would you prefer htmlentities vs htmlspecialchars when accepting user input such as textareas that support bbcode via javascript, or inputs in general.

 

Would you prefer to use htmlentities vs htmlspecialchars when using fckeditor. Fckeditor is only used by administrators.

 

My site will using a lot of input boxes for photo gallerys, blogs and much more so that is the reason why I would like to get some ideas. htmlentities/htmlspecialchars will be tied with mysql_real_escape_string along with other security checks.