The class is irrelevant. How they play with your speakers matters. You should talk more about your speakers and preamp.
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At that level of quality and expense, the only way to know is to audition them in your own system. I don’t believe anyone on the internet can tell you anything very useful to making a choice.
As @erik_squires said, the class is irrelevant. Both Class D and Class AB have been used to make wonderful amps. The key differences are in the engineering quality, not details of the circuit.