I voted BA also. I love this house. I've tried everything from this list but for 3-4 new ones. Black Aoud is the best imho. However, I should say that Aoud Roses Petals, utterly feminine to my nose, is absolutely beautiful too but that's mostly about the roses.
I also own and love Aoud Limes (includes saffron) and Royal Aoud (milder oud and with kumquat and citrus fruit).
I find White Aoud also very pleasant but again (with vanilla), more feminine. However, I get a heavy musky/indolic note from it that changed my mind about buying it. Another nice one is Sliver Aoud (aka Silver) that is lighter on oud and with a more conventional pyramid but again with the indolic note. Overall, much milder than the rest of Montales.
These are some of my favorites but if one MUST choose one, BA is it.