21" Crash Cymbals and Bigger

Heavier large crashes generally produce a darker, more sustained sound with a more defined wash, while lighter ones offer quicker response and brighter tones.

A 'medium' crash will have a more balanced volume and sustain, while a 'thin' crash will prioritize a louder volume, longer sustain, and a more washy, shimmering quality.

Not necessarily; the tonal character and articulation are equally important. A carefully chosen larger crash can still be articulate and controlled, even in louder contexts.