This blade scrapes the bowl getting all ingredients blended without leaving any on the bottom or sides of the bowl.  Used it for a lighter bread mix.  Have not used it yet for a heavy dough.  I mention that as this beater is made of a sturdy plastic/resin material and not sure if it would hold up to that weight.  I also have the standard metal blade by KitchenAid for my 5-qt. bowl.    

Pros: lightweight, easy to use and clean
Cons: none so far