Sounds like interesting tests. I am just using RealBand when this was taking place. I do have Sonar X1 Le. A limited version. But it sure seems like it has a lot of capabilities. Let me know how it is limited compared to yours. Because it looks pretty complex and powerful to me. Maybe all I need. Unless it limits the quality of the output. That wouldn't be good. I will have to find some tutorials on it to feel comfortable using it. RealBand seems pretty simple. Though maybe all of the settings that I don't know much about are hidden in the preferences.

I have the Roland QuadCapture with ASIO drivers. I believe it is a very good interface. Check it out on Amazon if you would like.