@daytrader I don't plan to go further down the line with Shindo since this is the happiest I've ever been with my system. I've always been curious of the brand and recently found a post here from 15 years ago saying that I'd like to try Shindo someday.
The Shindo magic is in its preamp; they all exhibit the Shindo house sound in varying levels. I was instantly impressed the moment I listened to the Monbrison yesterday. The amps, on the other hand, all sound different; this, of course, is all from research.
As for speakers, Shindo are commonly paired with Devore Fidelity, Living Voice, and their own speakers. All are easier to drive than my current Magico V3.