Hi Dave
Well, it certainly seems that you have tried just about everything there is. I must admit I haven't tried much at all in the reverb field. I am now 65 and, want to lay something aside that my family and friends can listen to when I reside in the great music room, up yonder
. Which incidentally is where I would be if I tried to build a unit myself. I am not the world's best at anything electrical to start with, coupled with arthritis in the pinkie of each hand, I am sure it would be best left alone. I listened to your Midnight rendition and, it certainly sounds what I am looking for. I will try ECCA and, see what they would charge to build me the unit you suggest.
Thank you very much again, for the information.
Kind Regards
Roger