I did the switch and even a side-by-side comparaison and Luxman was my favorite no questions asked
The Mac: C712 + MC7100
The Luxman: L-509X
The Mac was from the 90's so not a fair comparaison, but there were separate.
The Lux is much more detailled with a wide soudnstage. The voices were crisp and so clear, you can almost smell the breath of the signer!
The Mac has slighly more bass, but not as clean as the Lux. Th overall sound was warmer.
In the end, it is very different sound and it's a matter of personal preferences. And not all Max/Lux sound the same.