I auditioned Audio Mirror Reflection45 SET amplifiers a couple years ago. They might be the best value SET amplification in high end audio. I recall the retail was $5000/pair. Beautiful sound. Large, three dimensional image. I’m not sure Vlad still sells them, but if you reach out to him, he might have a pair available. Definitely worth a listen.
Audio Note Ankoru (or P4 Tonmeister Balanced) are excellent choices, but I wouldn’t recommend those amplifiers unless they’re driving Audio Note loudspeakers. Yes, they will work on efficient, high sensitivity loudspeakers, but the symbiosis with Audio Note amplification and loudspeakers cannot be replicated. One without the other is handcuffing the possibilities, and those amps are very expensive to not have them paired with speakers designed to match.