@donquichotte it seems from your assessment, I’d likely be safe with any iteration of M40.
@jjss49 i can’t thank you enough for the comprehensive comparison. I scoured forums for days and I’m glad I asked. I read in one review of the XD, that they are much more “tube friendly” than previous iterations. I was hoping to keep my ARC REF 160M’s as I do love them.
@noromance will investigate Spendor
@pdreher 40.1s sound like my kind of speaker! Would save $ too:)