If you are still not convinced that NServiceBus could make your message based architecture a lot simpler, maybe this new feature can convince you:
NServiceBus Modeling
“Visual Studio integrated modeling tools for NServiceBus allow you to graphically design your distributed solution and have all of your projects created, appropriate references set up, configuration of queues and routing made to "just work", on top of all the regular NServiceBus goodness.”
This first version includes Visual Studio integration and really makes developing with NServiceBus much more productive and enjoyable.
NServiceBus Modeling Tools for Visual Studio from NServiceBus Ltd. on Vimeo.
You can get this tool on the NServiceBus download page or via the Visual Studio Gallery here.