The 3ix is a little long in the tooth and may not beat the Freya. I have seen some comparisons to some heavy hitters and it’s done very well. Don’t assume the BAT will be the winner. My guess is if your system is passive friendly, then that mode will slay the BAT.
Subjective by default so varying listener preference is never surprising. I still believe that the BAT is built to a higher standard. But yes it does not guarantee it'd be everyone's choice.
I believe that you'll be happy with the LM 805 SET amplifier. 48 watt pure class A circuit . Word of mouth says this is a very good sounding amplifier.
Charles