Tomcy6, in regard to swapping in and out, that reminds me of when I was hanging out at a top "Audio Salon"; me and the guys were grooving on an all reference Audio Research system with top of the line Thiel speakers, when a customer came in wanting to audition an Adcom amplifier. Now Adcom is good "affordable" equipment, but it's not "ARC". That Adcom just smoked the groove.
My point in telling this, is that you have to have all top of the line in the audio chain, one piece wont do it; if you don't think you can swing 100%, one piece is a waste of money. Of course you will get some improvement, but not nearly what you paid for. A chain is no stronger than it's weakest link; we just had one weak link in a class "A" chain and it smoked the sound, relative to what we had been hearing.
Don't get me wrong "Adcom" makes very good gear, but it doesn't cost as much, or sound as good as ARC.
I have never experienced "spectacular" synergy, only what reading and common sense got me.
Enjoy the music.