question about queue or topic and clients

[田忠磊]

hi,
  i am desgining a system base active mq 5.0.now i am puzzled,i have
more 500 clients to connect to active mq.
and i will send message to clients activemq .   now i want to know, i
should create 500 topics , or i create one topic and make 500 clients
to subscribe the topic ,when Producer send a meeage ,500 clients will
all receive it ,and the client do with the  mesage.
which way is better?
 Thanks
Goper Tian