@firefly627s
Another nice thing about composing more than one system out of gear already on hand is that you can create different systems with different strengths.
I have one system that uses Martin Logan CLS electrostatics - if I want to listen to strings that is the system I head for. In the mood for the 1812 Overture? Head for the main system that uses Wilson Maxx 2s.
Ditto for finding the best set ups - wonder if a particular power amp is giving the best sound for you? Borrow an amp from another system and see. The last time I did that the Jeff Rowand 5 got relegated to the video system and was replaced with a CJ Premier 11a. All without going out and buying anything new.,,,