Content Based Routing

Here is my scenario, ( BizTalk 2006)

I have an orchestration which receives an XML file and doing some transformation. I need to send the transformed file to different clients based on the client Id in themessage. I made the Client ID as a promoted property in the target schema and created/configured  a physical port for each client based on thir transport(File, Ftp, http etc) and assigned filters based on the promoted Client Id. Now from the orchestration I need to send the response to these ports.  I do not think it is a neat way to create a logical port  and send shape for each client  in the orchestration. ( My client lists are huge.. almost 100 now, and can increase in the future)

But In the orchestration Binding window, I can bind only one logical port to one physical port. Is there a way to bind a single logical port to multiple physical ports and each of it has a filter?  I know Send Port Group is an option, but I am not sure I can perform filter opration inside a port which is added to a send port group. Appreciate any response.

Thanks in advance,

Shan.