For me I prefer Matrix Organizations. In matrix organizations all the departments work closely together and communicate with each other frequently to solve issues. The specialized information exchange allows managers to respond quickly to the needs of clients and the organization. The ability to contribute valuable information before decisions are made leads to employee satisfaction and increased motivation. Faster decisions only in matrix organizations. Teamwork is a good advantage in a matrix organizations structure, as all the departments working together.
However,as Dr.Simon mentioned , you have two bosses in a matrix organization functional manager and chief Executive!.Also, Matrix organization has more complex structure.