After trying out other extensions such as JCE, this one (JoomlaFCK) was the best for my purposes.

The interface was very clean and fast. Having a Word look and feel made it quick to take up. Also using this editor for inserting pdfs, files, images etc is so easy because you don't have to remember the path to the file. JoomlaFCK lets you create those links just by using the mouse!

Thank you JoomlaFCK. A truly great free product.