Stringreen, I, like you, love my 5As, and, unlike you, have not been tempted to either upgrade or move up the line to 7s. I suspect there will be a difference if i were to upgrade (for more than $10,000), but, even though I could easily afford the cost, I have no desire to do this. I simply am very pleased with my stereo system, more than I have ever been in my (62.5 years of) life. Our systems are quite different, and no doubt they sound slightly different (I say slightly intentionally since I feel/believe that the loudspeaker transducer influences what we hear far more than any other component upstream of the deliver of the sound/music/magic), but different is not bad, its just different. Like froggy (not sure who will get that analogy, perhaps no one). There is always an upgrade path, always. For me, its irrelevant. I have arrived at where I wanted to go, and now enjoy music at home, and in person, far more than I ever did in years past.'
Regards-
Richard
ps-before you moved west you agreed to allow me to hear your set-up, I didn't, but am grateful for your hospitality.