According to
http://www.smallbusinesscomputing.co...le.php/3577421, Managed switches are technically superior (they allow you to do things like reconfigure individual ports), for a small network, they may be more cumbersome to use, and offer little real advantage for the extra expense.
They are basically designed to make large networks easier to manage. So, if you had a couple of hundred PCs to network, you might use four or five 48 port managed switches..