kahit mas warm at low key yung k custom dark, mas defined yung sticking niya kesa sa aax stage (which is notoriously washy). so it will do surprisingly well in lighter rock / alternative. yung aax stage naman, obnoxiously bright para sa jazz ekek e. kaso pareho rin sila okay para sa wall of sound crash riding.
so basically,
aax stage will work great for most styles of rock
k custom dark will work great for everything from jazz to rock
both will suck for hard rock / heavy metal (aax stage is too washy, k custom dark is too, uh, dark)
... UNLESS they're used exclusively as crash rides, in which case both will do fine.