I upgraded to the 14 cup cuisinart from a 5 cup kitchenaid model and I've never looked back.  There was nothing wrong with the kitchenaid one; in fact, I ran it ragged for everything from twice weekly hummus to pestos and homemade burgers.  So why the change?  Size.  I needed something bigger but with the same performance standards.  The cuisinart won out due to the simple two button operation, large capacity and power.  I'm extremely happy with my purchase and highly recommend it.